The question whether a prop. has

Sinn
sense

can never depend on the truth of another prop. about a constituent of the first. E.g. the question whether (x). x = x has

Sinn
meaning

can't depend on the question whether (∃x). x = x is true. It doesn't describe reality at all, & deals therefore solely with symbols; n it says that they must symbolise, but not what they symbolise.

Ms-301,27

It's obvious that the dots & brackets are symbols, & obvious also that they haven't any independent meaning. You must therefore, in order to introduce so called “logical constants” properly, introduce the general notion of all possible combinations of them

–t = the general form of a prop. You thus introduce both a–b functions, identity & universality (the 3 fundamental constants) simultaneously.

(2015–) Wittgenstein Source Bergen Nachlass Edition (WS-BNE). Edited by the Wittgenstein Archives at the University of Bergen under the direction of Alois Pichler. In: Wittgenstein Source, curated by Alois Pichler (2009–) and Joseph Wang-Kathrein (2020–). (N) Bergen: WAB.