In order to be able to set a limit to thought, we should have to find both sides of the limit thinkable (i.e. we should have to be able to think what cannot be thought).
Ludwig WittgensteinIt is so characteristic, that just when the mechanics of reproduction are so vastly improved, there are fewer and fewer people who know how the music should be played.
Ludwig WittgensteinA tautology's truth is certain, a proposition's possible, a contradiction's impossible.
Ludwig Wittgenstein