| Disputed term/author/ism | Author |
Entry |
Reference |
|---|---|---|---|
| Classes | Frege | Simons I 102f Class/FregeVsSchröder: a) "Logical" classes: logical classes are value ranges. I 103 b) "Concrete" classes: a calculus of collective classes is just one calculus of a part and whole. VsFrege: >Russell’s paradox - is more vulnerable than Schröder’s "manifolds". >Calculus, >Parts/Wholes, >Value progression. |
F I G. Frege Die Grundlagen der Arithmetik Stuttgart 1987 F II G. Frege Funktion, Begriff, Bedeutung Göttingen 1994 F IV G. Frege Logische Untersuchungen Göttingen 1993 Simons I P. Simons Parts. A Study in Ontology Oxford New York 1987 |
| Loewenheim | Quine | X 79 Validity/Sentence/Quantity/Schema/Quine: if quantities and sentences fall apart in this way, there should be a difference between these two definitions of validity (via schema with sentences) or models (with quantities). But it follows from the Loewenheim theorem that the two definitions of validity (via sentences or quantities) do not fall apart as long as the object language is not too weakly (poorly) expressive. Condition: the object language must be able to express (include) the elementary number theory. Object Language: in such a language, a scheme that remains true for all sentence implementations is also fulfilled by all models and vice versa. The demand of elementary number theory is quite weak. Def Elementary Number Theory/eZT/Quine: is about positive integers using addition, multiplication, identity, truth functions and quantification. >Number Theory/Quine. Standard Grammar/Quine: the standard grammar would express the addition, multiplication and identity functions by appropriate predicates. That is how we get the two sentences: (I) If a scheme remains true for all implentations of sentences of the elementary number theory sets, then it is fulfilled by all models. X 80 (II) If a scheme is fulfilled by each model, then e is true for all settings of sets. Quine: Sentence (I) goes back to Loewenheim 1915: Sentence of Loewenheim/Quine: every scheme that is ever fulfilled by a model is fulfilled by a model 'U,‹U,β,α...', where U contains only the positive integers. Loewenheim/Hilbert/Bernays: intensification: the quantities α, β,γ,...etc. may each be determined by a sentence of the elementary number theory: So: (A) If a scheme is fulfilled by a model at all, it is true when using sentences of the elementary number theory instead of its simple schemes. Prerequisite for the implentations: the quantifiable variables must have the positive integers in their value range. However, they may also have other values. (I) follows from (A) that: (A) is equivalent to its contraposition: if a schema is wrong in all the implementations of s of sentences of the elementary number theory, it is not fulfilled by any model. If we speak here about its negation instead of the schema, then "false2" becomes "true" and "from no model" becomes "from every model". This gives us (I). The sentence (II) is based on the theorem of the deductive completeness of the quantifier logic. II 29 Classes: one could reinterpret all classes in its complement, "not an element of ..." - you would never notice anything! Bottom layer: each relative clause, each general term determines a class. >Classes/Quine. V 160 Loewenheim/Quine: there is no reinterpretation of characters - but rather a change of terms and domains - the meanings of the characters for truth functions and for quantifiers remain constant. The difference is not that big and can only play a role with the help of a new term: "ε" or "countable". For quantifiers and truth functions only the difference finite/infinte plays a role. Uncountable is not a matter of opinion. Solution: it is all about which term is fundamental: countable or uncountable. |
Quine I W.V.O. Quine Word and Object, Cambridge/MA 1960 German Edition: Wort und Gegenstand Stuttgart 1980 Quine II W.V.O. Quine Theories and Things, Cambridge/MA 1986 German Edition: Theorien und Dinge Frankfurt 1985 Quine III W.V.O. Quine Methods of Logic, 4th edition Cambridge/MA 1982 German Edition: Grundzüge der Logik Frankfurt 1978 Quine V W.V.O. Quine The Roots of Reference, La Salle/Illinois 1974 German Edition: Die Wurzeln der Referenz Frankfurt 1989 Quine VI W.V.O. Quine Pursuit of Truth, Cambridge/MA 1992 German Edition: Unterwegs zur Wahrheit Paderborn 1995 Quine VII W.V.O. Quine From a logical point of view Cambridge, Mass. 1953 Quine VII (a) W. V. A. Quine On what there is In From a Logical Point of View, Cambridge, MA 1953 Quine VII (b) W. V. A. Quine Two dogmas of empiricism In From a Logical Point of View, Cambridge, MA 1953 Quine VII (c) W. V. A. Quine The problem of meaning in linguistics In From a Logical Point of View, Cambridge, MA 1953 Quine VII (d) W. V. A. Quine Identity, ostension and hypostasis In From a Logical Point of View, Cambridge, MA 1953 Quine VII (e) W. V. A. Quine New foundations for mathematical logic In From a Logical Point of View, Cambridge, MA 1953 Quine VII (f) W. V. A. Quine Logic and the reification of universals In From a Logical Point of View, Cambridge, MA 1953 Quine VII (g) W. V. A. Quine Notes on the theory of reference In From a Logical Point of View, Cambridge, MA 1953 Quine VII (h) W. V. A. Quine Reference and modality In From a Logical Point of View, Cambridge, MA 1953 Quine VII (i) W. V. A. Quine Meaning and existential inference In From a Logical Point of View, Cambridge, MA 1953 Quine VIII W.V.O. Quine Designation and Existence, in: The Journal of Philosophy 36 (1939) German Edition: Bezeichnung und Referenz In Zur Philosophie der idealen Sprache, J. Sinnreich (Hg) München 1982 Quine IX W.V.O. Quine Set Theory and its Logic, Cambridge/MA 1963 German Edition: Mengenlehre und ihre Logik Wiesbaden 1967 Quine X W.V.O. Quine The Philosophy of Logic, Cambridge/MA 1970, 1986 German Edition: Philosophie der Logik Bamberg 2005 Quine XII W.V.O. Quine Ontological Relativity and Other Essays, New York 1969 German Edition: Ontologische Relativität Frankfurt 2003 Quine XIII Willard Van Orman Quine Quiddities Cambridge/London 1987 |
| Schematic Letters | Quine | II 201f Problem: do not reify properties and classes. Solution: distinction between schematic letters and quantifiable variables. --- IX 7ff~ Predicate letters: F, G, etc. do not introduce anything explicit. --- IX 7ff~ Statement schemes: the predicate letters F, G ... should never be considered as variables that take attributes or classes as values - they are kept away from quantifiers and do not appear in statements at all. --- X 32 Proposition/Object/Quine: If a sentence is supposed to be the name of a proposition (some writers pro, QuineVs), then the proposition is an object - then correct: p or not p for all propositions p - then p is not even variable over objects, and once schematic letter for sentences, but only variable - (no semantic ascent necessary). --- X 47 Schematic letters/Quine: placeholders for sentences of the object language. They do not belong to the object language itself. --- X 77 Model/Quine: of a scheme: is a quantity n-tuple: each schematic letter (for predicates) corresponds to a set, at the beginning of the n-tuple is a non-empty set U, the universal set or value range of the variables x, x, etc. the remaining sets of the model are the values of the set variables a, b, etc. Satisfaction: a model fulfills a scheme, if its set-theoretic analogue (sentence) is true. |
Quine I W.V.O. Quine Word and Object, Cambridge/MA 1960 German Edition: Wort und Gegenstand Stuttgart 1980 Quine II W.V.O. Quine Theories and Things, Cambridge/MA 1986 German Edition: Theorien und Dinge Frankfurt 1985 Quine III W.V.O. Quine Methods of Logic, 4th edition Cambridge/MA 1982 German Edition: Grundzüge der Logik Frankfurt 1978 Quine V W.V.O. Quine The Roots of Reference, La Salle/Illinois 1974 German Edition: Die Wurzeln der Referenz Frankfurt 1989 Quine VI W.V.O. Quine Pursuit of Truth, Cambridge/MA 1992 German Edition: Unterwegs zur Wahrheit Paderborn 1995 Quine VII W.V.O. Quine From a logical point of view Cambridge, Mass. 1953 Quine VII (a) W. V. A. Quine On what there is In From a Logical Point of View, Cambridge, MA 1953 Quine VII (b) W. V. A. Quine Two dogmas of empiricism In From a Logical Point of View, Cambridge, MA 1953 Quine VII (c) W. V. A. Quine The problem of meaning in linguistics In From a Logical Point of View, Cambridge, MA 1953 Quine VII (d) W. V. A. Quine Identity, ostension and hypostasis In From a Logical Point of View, Cambridge, MA 1953 Quine VII (e) W. V. A. Quine New foundations for mathematical logic In From a Logical Point of View, Cambridge, MA 1953 Quine VII (f) W. V. A. Quine Logic and the reification of universals In From a Logical Point of View, Cambridge, MA 1953 Quine VII (g) W. V. A. Quine Notes on the theory of reference In From a Logical Point of View, Cambridge, MA 1953 Quine VII (h) W. V. A. Quine Reference and modality In From a Logical Point of View, Cambridge, MA 1953 Quine VII (i) W. V. A. Quine Meaning and existential inference In From a Logical Point of View, Cambridge, MA 1953 Quine VIII W.V.O. Quine Designation and Existence, in: The Journal of Philosophy 36 (1939) German Edition: Bezeichnung und Referenz In Zur Philosophie der idealen Sprache, J. Sinnreich (Hg) München 1982 Quine IX W.V.O. Quine Set Theory and its Logic, Cambridge/MA 1963 German Edition: Mengenlehre und ihre Logik Wiesbaden 1967 Quine X W.V.O. Quine The Philosophy of Logic, Cambridge/MA 1970, 1986 German Edition: Philosophie der Logik Bamberg 2005 Quine XII W.V.O. Quine Ontological Relativity and Other Essays, New York 1969 German Edition: Ontologische Relativität Frankfurt 2003 Quine XIII Willard Van Orman Quine Quiddities Cambridge/London 1987 |
| Term Scope | Frege | II 28 Term scope/Frege: if two concepts have the same scope, two functions have accordingly the same value range. >Value progression. I 100/101 Def Number/amount/Frege: the set which belongs to the concept F is the scope of the concept "numerically equal to the concept F". I 100 Scope/term scope/Frege: if the straight line a is parallel to the straight line b, then the scope of the concept "straight line parallel to straight line a" is equal to the scope of the concept "straight line parallel to straight line b", and vice versa. This is equality of the term scope. IV 96 Subject/predicate/concept/term scope/Frege: e.g. "All A are B". False: that A was "subject" and B was "predicate". Correct: the predicate "is part of the class". "Some"/FregeVsSchröder: "some" is not a subject. IV 98/99 "Some" does not always designate the same part of a class. This leads to contradictions, "some" is considered the subject. >Subject, >Predicate, >Identity, >Copula, >Sentence, >Someone. IV 99 Universal quantification/Frege: universal quantification is a class below a class. Existential quantification: is an individual below a class. IV 100 "Are" and "is" have no content, i.e. they are copula and not an identity. IV 95 Class/Frege: class is a term scope, not a concept. >Concept, >Object, IV 108 Term scope/scope/Frege: does not have its existence in the individuals, but in the concept itself, i.e. in what is said about an object. IV 112 Scope/concept/term scope/Frege: the scope does not consist of the objects that fall under the concept like a forest consists of trees, but it only has a grip in the concept itself. ((s) Thus, research may reveal that nothing falls under the concept). |
F I G. Frege Die Grundlagen der Arithmetik Stuttgart 1987 F II G. Frege Funktion, Begriff, Bedeutung Göttingen 1994 F IV G. Frege Logische Untersuchungen Göttingen 1993 |
| Theories | Quine | I 34 Theory does not have to be based on intention, it was internalized in the past. I 56 QuineVsVerification: it is pointless to equate a sentence within the theory with one outside - Inter-theoretically no meaning - no additions with "or" ((s) Cf. Goodman, Davidson, "fake theories"). >Verification, >Additional hypotheses. I 57 For the time being, we retain our beliefs in theory creation. I 74 Basics for a theory: Carnap: terms - Quine: sentences. I 393 Theory is only predication, universal quantification, truth function (for derived properties) - general term (for primary properties) - (no "because"). I 429 Theory: are isolated systems, mass point, infinitesimal size: behavior in every case more typical, the closer you get to zero, therefore it is acceptable - but not allowed in ontology - unlike geometric object: Position of mass points made no sense - therefore no individuation - no identity. (> Quine, Word and Object, 1960(1), §52.) I 431 Paraphrase (no synonymy): Newton could be reformulated relativistically - like Church: "true in a higher sense" - sometimes acceptable. I 432 Theory: Structure of meaning, not choice of objects (Ramsey, Russell) Quine: new: even with physical objects they are also theoretical. Reason: sentences are semantically primary. >Frege principle. 1. Quine, W. V. (1960). Word and Object. MIT Press --- II 45 Equivalence of theories: is discovered when one discovers the possibility of reinterpretation - both true - but possibly logically incompatible. --- VI 134 Theory/Empirically equivalent/logically equivalent/Quine: Two theories can be logically incompatible and yet empirically equivalent. E.g. Riemann/Euclidean geometry. Case 1: even untransformable theories (in the same terminology, where each implies certain sentences that the other one does not imply) are empirically equivalent - no problem. Case 2: additional theoretical terms Case 3: logically incompatible. Davidson: can be traced back to case 2 - because contentious sentences depend on theoretical terms which are not empirical - therefore they are still empirically equivalent. Solution: theoretical term in question in two spellings (according to theory) - that makes them logically compatible. >Theoretical terms. VI 136 Empirically equivalent/logically incompatible/Theory/Quine: Case 2: (theory for global worlds without context embedding): solution: eliminate exotic terms (without predictive power) Important argument: then it is about consistency (otherwise QuineVsConsistency theory). Elimination: justified by the fact that we have no other access to the truth except our own theory. >Elimination. VI 139 Empirically equivalent/logically incompatible/Theory/Quine: Variant/Davidson: Both theories are valid, truth predicate: in comprehensive, neutral language. QuineVsDavidson: how much further should the variables reach then? - We need a stop, because we do not want a third theory - "everything different"/Important argument: the two systems definitely describe the same world - purely verbal question. --- XII 70 Theory form/Quine: after abstraction of the meanings of the non-logical vocabulary and the value range of the variables - reinterpretation of the theory form provides models. >Vocabulary, >Reinterpretation, >Abstraction, >Models. |
Quine I W.V.O. Quine Word and Object, Cambridge/MA 1960 German Edition: Wort und Gegenstand Stuttgart 1980 Quine II W.V.O. Quine Theories and Things, Cambridge/MA 1986 German Edition: Theorien und Dinge Frankfurt 1985 Quine III W.V.O. Quine Methods of Logic, 4th edition Cambridge/MA 1982 German Edition: Grundzüge der Logik Frankfurt 1978 Quine V W.V.O. Quine The Roots of Reference, La Salle/Illinois 1974 German Edition: Die Wurzeln der Referenz Frankfurt 1989 Quine VI W.V.O. Quine Pursuit of Truth, Cambridge/MA 1992 German Edition: Unterwegs zur Wahrheit Paderborn 1995 Quine VII W.V.O. Quine From a logical point of view Cambridge, Mass. 1953 Quine VII (a) W. V. A. Quine On what there is In From a Logical Point of View, Cambridge, MA 1953 Quine VII (b) W. V. A. Quine Two dogmas of empiricism In From a Logical Point of View, Cambridge, MA 1953 Quine VII (c) W. V. A. Quine The problem of meaning in linguistics In From a Logical Point of View, Cambridge, MA 1953 Quine VII (d) W. V. A. Quine Identity, ostension and hypostasis In From a Logical Point of View, Cambridge, MA 1953 Quine VII (e) W. V. A. Quine New foundations for mathematical logic In From a Logical Point of View, Cambridge, MA 1953 Quine VII (f) W. V. A. Quine Logic and the reification of universals In From a Logical Point of View, Cambridge, MA 1953 Quine VII (g) W. V. A. Quine Notes on the theory of reference In From a Logical Point of View, Cambridge, MA 1953 Quine VII (h) W. V. A. Quine Reference and modality In From a Logical Point of View, Cambridge, MA 1953 Quine VII (i) W. V. A. Quine Meaning and existential inference In From a Logical Point of View, Cambridge, MA 1953 Quine VIII W.V.O. Quine Designation and Existence, in: The Journal of Philosophy 36 (1939) German Edition: Bezeichnung und Referenz In Zur Philosophie der idealen Sprache, J. Sinnreich (Hg) München 1982 Quine IX W.V.O. Quine Set Theory and its Logic, Cambridge/MA 1963 German Edition: Mengenlehre und ihre Logik Wiesbaden 1967 Quine X W.V.O. Quine The Philosophy of Logic, Cambridge/MA 1970, 1986 German Edition: Philosophie der Logik Bamberg 2005 Quine XII W.V.O. Quine Ontological Relativity and Other Essays, New York 1969 German Edition: Ontologische Relativität Frankfurt 2003 Quine XIII Willard Van Orman Quine Quiddities Cambridge/London 1987 |
| Values | Russell | I 71 Values/Principia Mathematica(1)/Russell: when we speak of "values of φ z^", they are assigned to the φ and not to the z^. >Valuation, >Propositional function, >Functions/Russell, >Truth value, >Value range, >Value progression, >Predication. 1. Whitehead, A.N. and Russel, B. (1910). Principia Mathematica. Cambridge: Cambridge University Press. |
Russell I B. Russell/A.N. Whitehead Principia Mathematica Frankfurt 1986 Russell II B. Russell The ABC of Relativity, London 1958, 1969 German Edition: Das ABC der Relativitätstheorie Frankfurt 1989 Russell IV B. Russell The Problems of Philosophy, Oxford 1912 German Edition: Probleme der Philosophie Frankfurt 1967 Russell VI B. Russell "The Philosophy of Logical Atomism", in: B. Russell, Logic and KNowledge, ed. R. Ch. Marsh, London 1956, pp. 200-202 German Edition: Die Philosophie des logischen Atomismus In Eigennamen, U. Wolf (Hg) Frankfurt 1993 Russell VII B. Russell On the Nature of Truth and Falsehood, in: B. Russell, The Problems of Philosophy, Oxford 1912 - Dt. "Wahrheit und Falschheit" In Wahrheitstheorien, G. Skirbekk (Hg) Frankfurt 1996 |
| Disputed term/author/ism | Author Vs Author |
Entry |
Reference |
|---|---|---|---|
| Heim, Irene | Verschiedene Vs Heim, Irene | Klaus von Heusinger, Eselssätze und ihre Pferdefüsse Uni Konstanz Fachgruppe Sprachwissenschaft Arbeitspapier 64; 1994 Heusinger I 20 Def Skolem Function/Heim/Heusinger: (Heim 1990, Chiercha 1992, 159) (spelling f(x)) is interpreted in the meta-language as the function that assigns to each man a donkey that belongs to him. (33) Every man who has a donkey beats it. (33a) (x)[man (x) & (Ey)[donkey (y) & has (x,y)] > beat(x,f(x))]. VsSkolem Function/VsHeim/Heusinger: this pragmatic approach is more flexible than Neale's syntactic approach, but it overgenerates: Example (34) *Every donkey1 –owner beats it1. Problem: for (34) there is no reading in which the anaphoric pronoun can refer to the NP donkey-owner. (?) ((s) wouldn't it also require that there be only one donkey1?). Solution/Chiercha/Heusinger. (Chiercha 1992, 159): Rule for limiting the value range of the skolem function with a syntactic rule: (35) In a configuration of the form NPi,...esi, if esi is interpreted as a function, the range of this function is the head (value) of NPi. Problem: Uniqueness condition: in the given interpretation one receives only the weak reading of donkey sentences, since the skolem function always assigns only one donkey to a farmer. I 21 Selection function/Solution/Chiercha: must map each man to one of the (s) maybe several) donkeys he has. So this will be a selection function and a unique one. In this type of context, however, it will be a whole family of functions that are a priori all good candidates. VsChiercha/VsHeim/VsSkolem Function/Heusinger: the problem of ambiguity between strong and weak reading remains or is simply put into context. |
|
| Meinong, A. | Read Vs Meinong, A. | Re III 161 Read: Where I say "there might have been a winged horse," Russell and Meinong say: "There is a winged horse, but it does not exist". Read: you can also say: "Consider a situation (an" impossible world ") in which Pegasus is a horse that is not a horse." By that I do not admit that there is such an impossible horse. The difference lies in the value range of the quantifiers. |
Re III St. Read Thinking About Logic: An Introduction to the Philosophy of Logic. 1995 Oxford University Press German Edition: Philosophie der Logik Hamburg 1997 |
| Pythagoras | Quine Vs Pythagoras | XII 75 Löwenheim/Skolem/Strong Form/Axiom of Choice/Ontology/Reduction/Ontological Relativity/Quine: (early form): Thesis: if a theory is true and has a hyper-countable object range, then everything except for a countable section is superfluous, in the sense that it can be eliminated from the range of the variables, without any sentence becoming false. I.e. all acceptable theories can be reduced to countable ontologies. And these, in turn, to a specific ontology of natural numbers. For that you take the list, as far as it is explicitly known, as SF. And even if the list is not known, it exists. Accordingly, we can interpret all our objects as natural numbers, even though the list number ((s) the name) is not always known. Ontology: could we not establish a Pythagorean multi-purpose ontology once and for all? Pythagorean Ontology/Terminology/Quine: consists either only of numbers or only of bodies, or of sets, etc. Problem: Suppose we had such an ontology and somebody offered us something that would have appeared as an ontological reduction prior to our decision for the Pythagorean ontology, namely a method by which all things of a certain type A are superfluous in future theories, while the remaining portion would still be infinite. XII 76 In the new Pythagorean framework his discovery would still retain its essential content, even though it could no longer be called a reduction; it would be only a maneuver in which some numbers - we do not even know which - would lose a number property corresponding to A. VsPythagoreism: it shows that an all-engulfing Pythagoreanism is not attractive, because it only offers new and more obscure versions of old methods and problems. Solution: Ontological relativity, relativistic theory. It's simply pointless to speak of the ontology of a theory in absolute terms. ((s) i.e. in this case to assert that everything is a number.) (>inside/outside). The relevant predicates, e.g. "number", "set", "body" or whatever, would be distinguishable in the frame theory, however, by the roles they play in the laws of this theory. Quine: an ontological reduction is only interesting if we can specify an SF. If we have the axiom of choice and even a sign for a general selection operator, can we then specify an SF that concretizes the Löwenheim theorem? 1) We divide the object range into a countable number of equivalence classes, each with indistinguishable objects. (Indistinguishability Classes). We can dispense with all members of every equivalence class, except one. 2) Then we'll make use of the axiom of choice to pick out a survivor from each equivalence class. XII 77 Quine: if this were possible, we could write down a representative function with Hilbert's selection operator. Löwenheim/Quine: but the proof of the theorem has a different structure: it does not seem to justify the assumption that a representative function could be formulated in any theory that maps a hyper-countable range in a countable one. At first glance, such an SF is of course impossible: it would have to be reversibly unique to provide different real numbers with different function values. And this contradicts the mapping of a hyper-countable into a countable range, because it cannot be reversibly unambiguous. ((s) Because it has to assign the same value to two arguments somehow.) Framework Theory/Stronger/Weaker/Theory/Ontology/Quine: there are three strength levels of requirements regarding what is said about the ontology of the object theory within the framework theory. 1) weakest requirement to the framework theory: is sufficient if we do not want any reduction, but only explain about what things the theory is. I.e. we translate the object theory into the framework theory. I.e. we make translation proposals, with which, however, the inscrutability of reference still is to be taken into account. The two theories may even be identical, e.g. if some terms are explained by definitions by other terms of the same language. XII 78 2) stronger: in case of reduction by an SF, here the frame theory must assume the non-reduced range. (see above, analogy to raa, reductio ad absurdum). 3) strongest requirements: in case of reductions according to Löwenheim: i.e. from a hyper-countable to a countable range: here, the SF must be from a truly stronger frame theory. I.e. we can no longer accept it in the spirit of the raa. Conclusion: this thwarts an argument from the Löwenheim theorem in favor of Pythagoreanism. Ontological Relativity/Finite Range/Quine: in a finite range, ontological relativity is trivial. Since instead of quantification you can assume finite conjunctions or disjunctions, the variables and thus also the question of their value range also disappear. Even the distinction between names and other signs is eliminated. Therefore, an ontology for a finite theory about named objects is pointless. That we have just talked about it is because we were moving in a broader context. Names/Quine: are distinguished by the fact that they may be used for variables. |
Quine I W.V.O. Quine Word and Object, Cambridge/MA 1960 German Edition: Wort und Gegenstand Stuttgart 1980 Quine II W.V.O. Quine Theories and Things, Cambridge/MA 1986 German Edition: Theorien und Dinge Frankfurt 1985 Quine III W.V.O. Quine Methods of Logic, 4th edition Cambridge/MA 1982 German Edition: Grundzüge der Logik Frankfurt 1978 Quine V W.V.O. Quine The Roots of Reference, La Salle/Illinois 1974 German Edition: Die Wurzeln der Referenz Frankfurt 1989 Quine VI W.V.O. Quine Pursuit of Truth, Cambridge/MA 1992 German Edition: Unterwegs zur Wahrheit Paderborn 1995 Quine VII W.V.O. Quine From a logical point of view Cambridge, Mass. 1953 Quine VII (a) W. V. A. Quine On what there is In From a Logical Point of View, Cambridge, MA 1953 Quine VII (b) W. V. A. Quine Two dogmas of empiricism In From a Logical Point of View, Cambridge, MA 1953 Quine VII (c) W. V. A. Quine The problem of meaning in linguistics In From a Logical Point of View, Cambridge, MA 1953 Quine VII (d) W. V. A. Quine Identity, ostension and hypostasis In From a Logical Point of View, Cambridge, MA 1953 Quine VII (e) W. V. A. Quine New foundations for mathematical logic In From a Logical Point of View, Cambridge, MA 1953 Quine VII (f) W. V. A. Quine Logic and the reification of universals In From a Logical Point of View, Cambridge, MA 1953 Quine VII (g) W. V. A. Quine Notes on the theory of reference In From a Logical Point of View, Cambridge, MA 1953 Quine VII (h) W. V. A. Quine Reference and modality In From a Logical Point of View, Cambridge, MA 1953 Quine VII (i) W. V. A. Quine Meaning and existential inference In From a Logical Point of View, Cambridge, MA 1953 Quine VIII W.V.O. Quine Designation and Existence, in: The Journal of Philosophy 36 (1939) German Edition: Bezeichnung und Referenz In Zur Philosophie der idealen Sprache, J. Sinnreich (Hg) München 1982 Quine IX W.V.O. Quine Set Theory and its Logic, Cambridge/MA 1963 German Edition: Mengenlehre und ihre Logik Wiesbaden 1967 Quine X W.V.O. Quine The Philosophy of Logic, Cambridge/MA 1970, 1986 German Edition: Philosophie der Logik Bamberg 2005 Quine XII W.V.O. Quine Ontological Relativity and Other Essays, New York 1969 German Edition: Ontologische Relativität Frankfurt 2003 Quine XIII Willard Van Orman Quine Quiddities Cambridge/London 1987 |
| Russell, B. | Quine Vs Russell, B. | Chisholm II 75 Predicates/Denote/Russell: denoting expressions: proper names stand for individual things and general expressions for universals. (Probleme d. Phil. p. 82f). In every sentence, at least one word refers to a universal. QuineVsRussell: confusion! II 108 Theory of Descriptions/VsRussell/Brandl: thus the whole theory is suspected of neglecting the fact that material objects can never be part of propositions. QuineVsRussell: confusion of mention and use. Quine II 97 Pricipia mathematica, 1903: Here, Russell's ontology is rampant: every word refers to something. If a word is a proper name, then its object is a thing, otherwise it is a concept. He limits the term "existence" to things, but has a liberal conception of things which even includes times and points in empty space! Then there are, beyond the existent things, other entities: "numbers, the gods of Homer, relationships, fantasies, and four-dimensional space". The word "concept", used by Russell in this manner, has the connotation of "merely a concept". Caution: Gods and fantasies are as real as numbers for Russell! QuineVsRussell: this is an intolerably indiscriminate ontology. Example: Take impossible numbers, e.g. prime numbers that are divisible by 6. It must be wrong in a certain sense that they exist, and that is in a sense in which it is right that there are prime numbers! Do fantasies exist in this sense? II 101 Russell has a preference for the term "propositional function" against "class concept". In P.M. both expressions appear. Here: Def "Propositional Function": especially based on forms of notation, e.g. open sentences, while concepts are decidedly independent of notation. However, according to Meinong Russell's confidence is in concepts was diminished, and he prefers the more nominalistic sound of the expression "propositional function" which is now carries twice the load (later than Principia Mathematica.) Use/Mention/Quine: if we now tried to deal with the difference between use and mention as carelessly as Russell has managed to do sixty years ago, we can see how he might have felt that his theory of propositional functions was notation based, while a theory of types of real classes would be ontological. Quine: we who pay attention to use and mention can specify when Russell's so-called propositional functions as terms (more specific than properties and relations) must be construed as concepts, and when they may be construed as a mere open sentences or predicates: a) when he quantifies about them, he (unknowingly) reifies them as concepts. For this reason, nothing more be presumed for his elimination of classes than I have stated above: a derivation of the classes from properties or concepts by means of a context definition that is formulated such that it provides the missing extensionality. QuineVsRussell: thinks wrongly that his theory has eliminated classes more thoroughly from the world than in terms of a reduction to properties. II 102 RussellVsFrege: "~ the entire distinction between meaning and designating is wrong. The relationship between "C" and C remains completely mysterious, and where are we to find the designating complex which supposedly designates C?" QuineVsRussell: Russell's position sometimes seems to stem from a confusion of the expression with its meaning, sometimes from the confusion of the expression with its mention. II 103/104 In other papers Russel used meaning usually in the sense of "referencing" (would correspond to Frege): "Napoleon" particular individual, "human" whole class of such individual things that have proper names. Russell rarely seems to look for an existing entity under any heading that would be such that we could call it the meaning that goes beyond the existing referent. Russell tends to let this entity melt into the expression itself, a tendency he has in general when it comes to existing entities. QuineVsRussell: for my taste, Russell is too wasteful with existing entities. Precisely because he does not differentiate enough, he lets insignificance and missed reference commingle. Theory of Descriptions: He cannot get rid of the "King of France" without first inventing the description theory: being meaningful would mean: have a meaning and the meaning is the reference. I.e. "King of France" without meaning, and "The King of France is bald" only had a meaning, because it is the short form of a sentence that does not contain the expression "King of France". Quine: actually unnecessary, but enlightening. Russell tends commingle existing entities and expressions. Also on the occasion of his remarks on Propositions: (P.M.): propositions are always expressions, but then he speaks in a manner that does not match this attitude of the "unity of the propositions" (p.50) and of the impossibility of infinite propositions (p.145) II 105 Russell: The proposition is nothing more than a symbol, even later, instead: Apparently, propositions are nothing..." the assumption that there are a huge number of false propositions running around in the real, natural world is outrageous." Quine: this revocation is astounding. What is now being offered to us instead of existence is nothingness. Basically Russell has ceased to speak of existence. What had once been regarded as existing is now accommodated in one of three ways a) equated with the expression, b) utterly rejected c) elevated to the status of proper existence. II 107 Russell/later: "All there is in the world I call a fact." QuineVsRussell: Russell's preference for an ontology of facts depends on his confusion of meaning with reference. Otherwise he would probably have finished the facts off quickly. What the reader of "Philosophy of logical atomism" notices would have deterred Russell himself, namely how much the analysis of facts is based on the analysis of language. Russell does not recognize the facts as fundamental in any case. Atomic facts are as atomic as facts can be. Atomic Facts/Quine: but they are composite objects! Russell's atoms are not atomic facts, but sense data! II 183 ff Russell: Pure mathematics is the class of all sentences of the form "p implies q" where p and q are sentences with one or more variables, and in both sets the same. "We never know what is being discussed, nor if what we say is true." II 184 This misinterpretation of mathematics was a response to non-Euclidean geometry. Numbers: how about elementary arithmetic? Pure numbers, etc. should be regarded as uninterpreted. Then the application to apples is an accumulation. Numbers/QuineVsRussell: I find this attitude completely wrong. The words "five" and "twelve" are nowhere uninterpreted, they are as much essential components of our interpreted language as apples. >Numbers. They denote two intangible objects, numbers that are the sizes of quantities of apples and the like. The "plus" in addition is also interpreted from start to finish, but it has nothing to do with the accumulation of things. Five plus twelve is: how many apples there are in two separate piles. However, without pouring them together. The numbers "five" and "twelve" differ from apples in that they do not denote a body, that has nothing to do with misinterpretation. The same could be said of "nation" or "species". The ordinary interpreted scientific speech is determined to abstract objects as it is determined to apples and bodies. All these things appear in our world system as values of variables. II 185 It even has nothing to do with purity (e.g. of the set theory). Purity is something other than uninterpretedness. XII 60 Expression/Numbers/Knowledge/Explication/Explanation/Quine: our knowledge of expressions is alone in their laws of interlinking. Therefore, every structure that fulfills these laws can be an explication. XII 61 Knowledge of numbers: consists alone in the laws of arithmetic. Then any lawful construction is an explication of the numbers. RussellVs: (early): Thesis: arithmetic laws are not sufficient for understanding numbers. We also need to know applications (use) or their embedding in the talk about other things. Number/Russell: is the key concept here: "there are n such and suches". Number/Definition/QuineVsRussell: we can define "there are n such and suches" without ever deciding what numbers are beyond their fulfillment of arithmetic addition. Application/Use/QuineVsRussell: wherever there is structure, the applications set in. E.g. expressions and Gödel numbers: even the mention of an inscription was no definitive proof that we are talking about expressions and not about Gödel numbers. We can always say that our ostension was shifted. VII (e) 80 Principia Mathematica(1)/PM/Russell/Whitehead/Quine: shows that the whole of mathematics can be translated into logic. Only three concepts need to be clarified: Mathematics, translation and logic. VII (e) 81 QuineVsRussell: the concept of the propositional function is unclear and obscures the entire PM. VII (e) 93 QuineVsRussell: PM must be complemented by the axiom of infinity if certain mathematical principles are to be derived. VII (e) 93/94 Axiom of infinity: ensures the existence of a class with infinitely many elements. Quine: New Foundations instead makes do with the universal class: θ or x^ (x = x). 1. Whitehead, A.N. and Russel, B. (1910). Principia Mathematica. Cambridge: Cambridge University Press. VII (f) 122 Propositional Functions/QuineVsRussell: ambiguous: a) open sentences b) properties. Russell no classes theory uses propositional functions as properties as value-bound variables. IX 15 QuineVsRussell: inexact terminology. "Propositional function", he used this expression both when referring to attributes (real properties) and when referring to statements or predicates. In truth, he only reduced the theory of classes to an unreduced theory of attributes. IX 93 Rational Numbers/QuineVsRussell: I differ in one point: for me, rational numbers are themselves real numbers, not so for Russell and Whitehead. Russell: rational numbers are pairwise disjoint for them like those of Peano. (See Chapter 17), while their real numbers are nested. ((s) pairwise disjoint, contrast: nested) Natural Numbers/Quine: for me as for most authors: no rational integers. Rational Numbers/Russell: accordingly, no rational real numbers. They are only "imitated" by the rational real numbers. Rational Numbers/QuineVsRussell: for me, however, the rational numbers are real numbers. This is because I have constructed the real numbers according to Russell's version b) without using the name and the designation of rational numbers. Therefore, I was able to retain name and designation for the rational real numbers IX 181 Type Theory/TT/QuineVsRussell: in the present form our theory is too weak to prove some sentences of classical mathematics. E.g. proof that every limited class of real numbers has a least upper boundary (LUB). IX 182 Suppose the real numbers were developed in Russell's theory similar to Section VI, however, attributes were now to take the place of classes and the alocation to attributes replaces the element relation to classes. LUB: (Capters 18, 19) of a limited class of real numbers: the class Uz or {x:Ey(x ε y ε z)}. Attribute: in parallel, we might thus expect that the LUB of a limited attribute φ of real numbers in Russell's system is equal to the Attribute Eψ(φψ u ψ^x). Problem: under Russell's order doctrine is this LUB ψ is of a higher order than that of the real numbers ψ which fall under the attribute φ whose LUB is sought. Boundary/LUB/QuineVsRussell: You need LUB for the entire classic technique of calculus, which is based on continuity. However, LUB have no value for these purposes if they are not available as values of the same variables whose value range already includes those numbers whose upper boundary is wanted. An upper boundary (i.e. LUB) of higher order cannot be the value of such variables, and thus misses its purpose. Solution/Russell: Axiom of Reducibility: Def Axiom of Reducibility/RA/Russell/Quine: every propositional function has the same extension as a certain predicative one. I.e. Ey∀x(ψ!x φx), Eψ∀x∀y[ψ!(x,y) φ(x,y)], etc. IX 184 VsConstruktivism/Construction/QuineVsRussell: we have seen Russell's constructivist approach to the real numbers fail (LUB, see above). He gave up on constructivism and took refuge in the RA. IX 184/185 The way he gave it up had something perverse to it: Axiom of Reducibility/QuineVsRussell: the RA implies that all the distinctions that gave rise to its creation are superfluous! (... + ...) IX 185 Propositional Function/PF/Attribute/Predicate/TT/QuineVsRussell: overlooked the following difference and its analogs: a) "propositional functions": as attributes (or intentional relations) and b) proposition functions: as expressions, i.e. predicates (and open statements: e.g. "x is mortal") Accordingly: a) attributes b) open statements As expressions they differ visibly in the order if the order is to be assessed on the basis of the indices of bound variables within the expression. For Russell everything is "AF". Since Russell failed to distinguish between formula and object (word/object, mention/use), he did not remember the trick of allowing that an expression of higher order refers straight to an attribute or a relation of lower order. X 95 Context Definition/Properties/Stage 2 Logic/Quine: if you prefer properties as sets, you can introduce quantification over properties, and then introduce quantification over sets through a schematic context definition. Russell: has taken this path. Quine: but the definition has to ensure that the principle of extensionality applies to sets, but not to properties. That is precisely the difference. Russell/QuineVsRussell: why did he want properties? X 96 He did not notice at which point the unproblematic talk of predicates capsized to speaking about properties. ((s) object language/meta language/mention/use). Propositional Function/PF: Russell took it over from Frege. QuineVsRussell: he sometimes used PF to refer to predicates, sometimes to properties. |
Quine I W.V.O. Quine Word and Object, Cambridge/MA 1960 German Edition: Wort und Gegenstand Stuttgart 1980 Chisholm I R. Chisholm The First Person. Theory of Reference and Intentionality, Minneapolis 1981 German Edition: Die erste Person Frankfurt 1992 Chisholm II Roderick Chisholm In Philosophische Aufsäze zu Ehren von Roderick M. Ch, Marian David/Leopold Stubenberg Amsterdam 1986 Chisholm III Roderick M. Chisholm Theory of knowledge, Englewood Cliffs 1989 German Edition: Erkenntnistheorie Graz 2004 |
| Russell, B. | Hintikka Vs Russell, B. | II 165 On Denoting/Russell/Hintikka: (Russell 1905) Problem: with phrases that stand for genuine constituents of propositions. Problem/Frege: failure of substitutivity of identity (SI) in intensional contexts. Informative Identity/Frege: the fact that identity can even sometimes be informative is connected to this. EG/Existential Generalization/Russell: it, too, may fail in in intensional contexts, (problem of empty terms). HintikkaVsRussell: he does not recognize the depth of the problem and rather circumvents the problems of denoting terms. E.g. The bald king of France/Russell: Problem: we cannot prove by existential generalization that there is a present king of France. HintikkaVsRussell: But there are also other problems. (see below for ambiguity of cross world identificaiton). Description/Russell/Hintikka: Def Primary Description: the substitutivity of identity applies to them (SI) Def secondary description: for them, substitutivity of identity (SI) fails. II 166 Existential Generalization/Russell: two readings: (1) George IV did not know whether Scott was the author of Waverley. Description/Logical Form/Russell/Hintikka: "the author of Waverley": (ix)A(x) primarily: the description has the following power: (2) (Ex)[A(x) & (y) A(y) > y = x) & ~ George IV knew that (Scott = x)]. ((s) notation: quantifier here always normal existential quantifier, mirrored E). I.e. the quantifier has the maximum range in the primary identification. The second reading is more likely, however: Secondary: (3) ~George IV knew that (Ex)[A(x) & (y)(A(y) > y = x & (Scott = x)]. ((s) narrow range): Range/HintikkaVsRussell: he did not know that there is also a third option for the range of a quantifier ((s) >"medium range"/Kripke). (4) ~(Ex)[A(x) & (y)(A(y) > y = x ) & George IV knew that (Scott = x)]. II 166 Existential Generalization/HintikkaVsRussell: he did not see that there was a reason for the failure of the existential generalization, which is not caused by the non-existence of the object. E.g. (5) George IV knew that the author of Waverley is the author of Waverley. a) trivial interpretation: I 167 (6) George IV knew that (Ex)(A(x) & (y)(A(y) > y = x)) everyday language translation: he knew that one and only one person wrote Waverley. I 166 b) non-trivial interpretation: (7) (Ex)(A(x) & (y)(A(y) > y = x) & George IV knew that (A(x) & (y)(A(y) > y = x))). ((s) no quantifier after "knew that everyday language translation: George knew of the only person who actually wrote Waverley, that they did. Because knowledge implies truth, (7) is equivalent to (8) (Ex) George IV knew that (Ez)(A(z) & (y)(A(y) > y = z) & x = z). this is equivalent to. (9) (Ex) George IV knew that (the author of Waverley = x) Here, the description has secondary (narrow) range. Everyday language translation: George knew who the author of Waverley is. I 167 Knowledge/Who/What/Where/HintikkaVsRussell: Russell cannot explicitly analyze structures of the form knows + W-sentence. General: (10) a knows, who (Ex x) is so that A(x) becomes (11) (Ex) a knows that A(x). Hintikka: this is only possible if we modify Russell’s approach: Problem: the existential generalization now collapses in a way that cannot be attributed to non-existence, and which cannot be analyzed by Russell’s Theory of Descriptions (ThoD). Problem: for every person, there are a lot of people whose names they know and of whose existence they know, but of who they do not know who they are. II 168 E.g. Charles Dodgson was for Queen Victoria someone of whom she had heard, but whom she did not know. Problem: if we assume that (11) is the correct analysis of (10), the following applies. (12) ~(Ex) Victoria knew that Dodgson = x) But that’s trivially false, even according to Russell. Because the following is certainly true: (13) Victoria knew that Dodgson = Dodgson) Existential Generalization/EG: then yields (14) (Ex) Victoria knew that Dodgson = x) So exactly the negation of (12) contradiction. II 168 Descriptions/Hintikka: are not involved here. Therefore, Russell’s description theory cannot help here, either. E.g. we can also assume that Victoria knew of the existence of Dodgson. Empty Terms/Empty Names: are therefore not the problem, either. Ontology/Hintikka: so our problem gets an ontological aspect. Existential Generalization/EG/Being/Quine/Ontology/Hintikka: the question of whether existential generalization may be applied on a singular term "b", E.g. in a context "F(b)", is the same as whether b may be value of a bound variable. Existential Generalization/Hintikka: does not fail here because of non-existence. II 169 We are dealing with the following problems here: Manifestation used by a) no SI Frege, Russell b) no EG (i) due to non-existence Russell (ii) because of ambiguity Hintikka Ambiguity/Solution/Hintikka: possible worlds semantics. E.g. (12) - (14) the problem is not that Dodgson did not exist in the actual world or not in one of Victoria’s worlds of knowledge, but that the name Dodgson singles out different individuals in different possible worlds. Hence (14) does not follow from (13). II 170 Existential Generalization/EG/Ambiguity/Clarity/Russell/Hintikka: Which way would have been open to Russell?. Knowing-Who/Russell/Hintikka: Russell himself very often speaks of the equivalence of knowledge, who did something with the existence of another individual, which is known to have done... + ... II 173 Denotation/Russell/Hintikka: Important argument: an ingenious feature of Russell’s theory of denotation from 1905 is that it is the quantifiers that denote! Theory of Denotation/Russell: (end of "On Denoting") includes the reduction of descriptions to objects of acquaintance. II 174 Hintikka: this relation is amazing, it also seems to be circular to allow only objects of acquaintance. Solution: We need to see what successfully denoting expressions (phrases) actually denote: they precisely denote objects of acquaintance. Ambiguity/Clarity/Hintikka: it is precisely ambiguity that leads to the failure of the existential generalization. Existential Generalization/Waverley/Russell/Hintikka: his own example shows that only objects of acquaintance are allowed: "the author of Waverley" in (1) is in fact a primary incident i.e. his example (2). "Whether"/Russell/Hintikka: only difference: wanted to know "if" instead of "did not know". (secondary?). Secondary Description/Russell: can also be expressed like this: that George wanted to know of the man who actually wrote Waverley whether he was Scott. II 175 That would be the case if George IV had seen Scott (in the distance) and had asked "Is that Scott?". HintikkaVsRussell: why does Russell select an example with a perceptually known individual? Do we not usually deal with beings of flesh and blood whose identity is known to us, instead of only with objects of perception?. Knowing Who/Knowing What/Perception Object/Russell/Hintikka: precisely with perception objects it seems as if the kind of clarity that we need for a knowing-who, is not just given. Identifcation/Possible Worlds Semantics/HintikkaVsRussell/Hintikka: in my approach Dodgson is a bona fide individual iff. he is one and the same individual in all worlds of knowledge of Victoria. I.e. identifiable iff. (15) (E.g.) in all relevant possible worlds it is true that (Dodgson = x). Problem: What are the relevant possible worlds?. II 178 Quantifier/Quantification/HintikkaVsRussell: Russell systematically confuses two types of quantifiers. (a) of acquaintance, b) of description). Problem: Russell has not realized that the difference cannot be defined solely in terms of the actual world!. Solution/Hintikka: we need a relativization to sets of possible worlds that change with the different propositional attitudes. II 179 RussellVsHintikka: he would not have accepted my representation of his position like this. HintikkaVsRussell: but the reason for this merely lies in a further error of Russell’s: I have not attributed to him what he believed, but what he should have believed. Quantification/Russell/Hintikka: he should have reduced to objects of acquaintance. Russell believed, however, it was sufficient to eliminate expressions that seemingly denote objects that are not such of acquaintance. Important argument: in that his quantifiers do not enter any ontological commitment. Only denoting expressions do that. Variable/Russell/Hintikka: are only notational patterns in Russell. Ontological Commitment/Quine/HintikkaVsRussell: Russell did not recognize the ontological commitment that 1st order languages bring with them. Being/Ontology/Quine: "Being means being value of a bound variable". HintikkaVsRussell: he has realized that. II 180 Elimination/Eliminability/HintikkaVsRussell/Hintikka: in order to eliminate merely seemingly denoting descriptions one must assume that the quantifiers and bound variables go over individuals that are identified by way of description. ((s) Object of the >Description). Otherwise, the real Bismarck would not be a permissible value of the variables with which we express that there is an individual of a certain species. Problem: then these quantifiers may not be constituents of propositions, because their value ranges do not only consist of objects of acquaintance. Therefore, Russell’s mistake was twofold. Quantifier/Variable/Russell/Hintikka, 1905, he had already stopped thinking that quantifiers and bound variables are real constituents of propositions. Def Pseudo Variable/Russell/Hintikka: = bound variable. Acquaintance/Russell: values of the variable should only be objects of acquaintance. (HintikkaVsRussell). Quantifiers/HintikkaVsRussell: now we can see why Russell did not differentiate between different quantifiers (acquaintance/description): For him quantifiers were only notational patterns, and for them the range of possible interpretations need not be determined, therefore it makes no difference if the rage changes!. Quantification/Russell: for him, it was implicitly objectional (referential), and in any event not substitutional. Peacocke I 190 Possible Worlds/Quantification/HintikkaVsRussell: R. is unable to explain the cases in which we quantify in belief contexts (!) where (according to Hintikka) the quantifier over "publicly descriptively identified" particulars is sufficient. Hintikka: compares with a "roman à clef". Peacocke: it is not clear that (whether) this could not be explained by Russell as cases of general ideas, so that the person with such and such characteristics is so and so. Universals/Acquaintance/Russell/Peacocke: we are familiar with universals and they are constituents of our thoughts. HintikkaVsRussell: this is a desperate remedy to save the principle of acquaintance. PeacockeVsRussell: his arguments are also very weak. Russell: E.g. we cannot understand the transitivity of "before" if we are not acquainted with "before", and even less what it means that one thing is before another. While the judgment depends on a consciousness of a complex, whose analysis we do not understand if we do not understand the terms used. I 191 PeacockeVsRussell: what kind of relationship should exist between subject and universal?. Solution: the reformulated PB: Here we can see to which conditions a term is subject, similar to the principle of sensitivity in relational givenness. I 192 HintikkaVsRussell: ("On denoting what?", 1981, p.167 ff): the elimination of objects with which the subject is not familiar from the singular term position is not sufficient for the irreducibility of acquaintance that Russell had in mind. Quantification/Hintikka: the quantifiers will still reach over objects with which the subject is not familiar. But such quantifiers cannot be constituents of propositions, if that is to be compatible with the PB. Because they would certainly occur through their value range Occur and these do not consist of particulars with which one is familiar. |
Hintikka I Jaakko Hintikka Merrill B. Hintikka Investigating Wittgenstein German Edition: Untersuchungen zu Wittgenstein Frankfurt 1996 Hintikka II Jaakko Hintikka Merrill B. Hintikka The Logic of Epistemology and the Epistemology of Logic Dordrecht 1989 Peacocke I Chr. R. Peacocke Sense and Content Oxford 1983 Peacocke II Christopher Peacocke "Truth Definitions and Actual Languges" In Truth and Meaning, G. Evans/J. McDowell Oxford 1976 |