The cult of individual personalities is always, in my view, unjustified. To be sure, nature distributes her gifts variously among her children. But there are plenty of the well-endowed ones too, thank God, and I am firmly convinced that most of them live quiet, unregarded lives.

I have remained a simple fellow who asks nothing of the world; only my youth is gone - the enchanting youth that forever walks on air.

Mankind must give up war in the Atomic Era. What is at stake is the life or death of humanity.

The finest emotion of which we are capable is the mystic emotion.

I don't believe in mathematics.

There is not the slightest indication that nuclear energy will ever be obtainable. It would mean that the atom would have to be shattered at will.

Through the release of atomic energy, our generation has brought into the world the most revolutionary force since prehistoric man's discovery of fire. This basic force of the universe cannot be fitted into the outmoded concept of narrow nationalisms.