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Sign/TugrendhatVsHusserl: Is there not always something for special function - characterization - then the whole theory of categorical acts is purely a thought theory without regard to signs - use here the same as function - Characterization/Tugendhat: the same as classifying or distinguishing.
"Natural signs"/Tugendhat: signs: E.g. browning of the leaves in autumn, that it will thunder soon, etc. - no intention, no object, but facts.
Signs/Tugendhat: do not occur in the place of the objects, but in the place of a fictitious sign-free reference - (>Substitute).
The linguistic signs do not represent other functions that would be possible without them.
Vorlesungen zur Einführung in die Sprachanalytische Philosophie Frankfurt 1976
Philosophische Aufsätze Frankfurt 1992