I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our own being.

Since the mathematicians have invaded the theory of relativity I do not understand it myself any more.

The ideals which have always shone before me and filled me with the joy of living are goodness, beauty, and truth.

Quantum mechanics is certainly imposing. But an inner voice tells me that this is not yet the real thing. The theory says a lot, but does not bring us any closer to the secrets of the "Old One." I, at any rate, am convinced that He is not playing at dice.

If people would only talk about what they understood, Earth would be a very quiet place.

War cannot be humanized. It can only be abolished.

I have not eaten enough of the tree of knowledge, though in my profession I am obligated to feed on it regularly.