I believe that one of the things Christianity says is that sound doctrines are all useless. That you have to change your life. (Or the direction of y… - Ludwig Wittgenstein

A proposition is completely logically analyzed if its grammar is made completely clear: no matter what idiom it may be written or expressed in...

The sense of a truth-function of p is a function of the sense of p. Denial, logical addition, logical multiplication, etc. etc., are operations. (Denial reverses the sense of a proposition.)

"Everything is already there in...." How does it come about that [an] arrow points? Doesn't it seem to carry in it something besides itself? — "No, not the dead line on paper; only the psychical thing, the meaning, can do that." — That is both true and false. The arrow points only in the application that a living being makes of it.