If the workers of this world, men and women, decide not to manufacture and transport ammunition, it would end war for all time. We must do that. Dedicate our lives to drying up the source of war; ammunition factories.

It is better to believe than to disbelieve; in doing you bring everything to the realm of possibility.

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.

Science can only ascertain what is, but not what should be, and outside of its domain value judgements of all kinds remain necessary.

Never do anything against conscience even if the state demands it.

[When asked "Dr. Einstein, why is it that when the mind of man has stretched so far as to discover the structure of the atom we have been unable to devise the political means to keep the atom from destroying us?"] That is simple, my friend. It is because politics is more difficult than physics.

Science has brought forth this danger, but the real problem is in the minds and hearts of men.