It is my fate to be considered an authority, since I spent my youth rebelling against it.

Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.

What I seek to accomplish is simply to serve with my feeble capacity truth and justice, at the risk of pleasing no one.

All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.

My pacifism is an instinctive feeling, a feeling that possesses me because the murder of men is disgusting. My attitude is not derived from any intellectual theory but is based on my deepest antipathy to every kind of cruelty and hatred.

I shall never believe that God plays dice with the world.

The conflict that exists today is no more than an old-style struggle for power, once again presented to mankind in semireligious trappings. The difference is that, this time, the development of atomic power has imbued the struggle with a ghostly character; for both parties know and admit that, should the quarrel deteriorate into actual war, mankind is doomed.