Animal/Thinking/Language/Descartes/Dupré: even those who defend the cognitive abilities of the animals the most often accept the Cartesian assumption that it is in principle impossible to prove the thinking or even the consciousness of animals because this would be conceptually dependent on behavior.
DupréVsDavidson: if he were right, the question at stake would not only be whether or not one can teach monkeys to speak, but whether one can teach them to think.
Language/Thinking/Dupré: there are many forms of non-verbal behavior that allow communication, and many non-verbal manifestations of thinking._____________Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. The note [Author1]Vs[Author2] or [Author]Vs[term] is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.
"Conversations with Apes. Reflections on the Scientific Study of Language", in: Investigating Psychology. Sciences of the Mind after Wittgenstein, J. Hyman (Ed) London/New York 1991, pp. 95-116
Der Geist der Tiere, D Perler/M. Wild, Frankfurt/M. 2005