Once you can accept the universe as matter expanding into nothing that is something, wearing stripes with plaid comes easy.

I am not a genius, I am just curious. I ask many questions. and when the answer is simple, then God is answering.

The individual feels the futility of human desires and aims and the sublimity and marvelous order which reveal themselves both in nature and in the world of thought.

Conventional words or other signs have to be sought for laboriously only in a second stage, where the associative play already referred to is sufficiently established and can be reproduced at will.

How vile and despicable war seems to me! I would rather be hacked to pieces than take part in such an abominable business.

It is just as important to make knowledge live and keep it alive as to solve specific problems.

The truth of a theory is in your mind, not in your eyes.