Ludwig Wittgenstein Logic Quotations

The object of philosophy is the logical clarification of thought.

The so-called law of induction cannot possibly be a law of logic, since it is obviously a proposition with a sense.--Nor, therefore, can it be an a priori law.

This procedure [selecting the simplest law], however, has no logical justification but only a psychological one.

It is possible--indeed possible even according to the old conception of logic--to give in advance a description of all 'true' logical propositions. Hence there can never be surprises in logic.

All propositions are of equal value.

Elementary propositions consist of names.

If you use a trick in logic, whom can you be tricking other than yourself?

What we cannot speak about we must pass over in silence.

There can never be surprises in logic.

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

A logical picture of facts is a thought.

A picture whose pictorial form is logical form is called a logical picture.

My day passes between logic, whistling, going for walks, and being depressed. I wish to God that I were more intelligent and everything would finally become clear to me - or else that I needn't live much longer.