Believers who have formulated such proofs [for God's existence] ... would never have come to believe as a result of such proofs

It is not humanly possible to gather immediately from it what the logic of language is. Language disguises thought.

If you tried to doubt everything you would not get as far as doubting anything. The game of doubting itself presupposes certainty.

The eternal life is given to those who live in the present.

A tautology's truth is certain, a proposition's possible, a contradiction's impossible.

Belief in the causal nexus is superstition.

Think of words as instruments characterized by their use, and then think of the use of a hammer, the use of a chisel, the use of a square, of a glue pot, and of the glue.