Mere praise of peace is easy and ineffective. What is needed is acitve participation in the fight against war and everything which leads to it.

They come into being not through demonstration but through revelation, through the medium of powerful personalities.

To one bent on age, death will come as a release. I feel this quite strongly now that I have grown old myself and have come to regard death like an old debt, at long last to be discharged.

Politics is far more complicated than physics.

There's no question dolphins are smarter than humans as they play more.

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.

In my relativity theory I set up a clock at every point in space, but in reality I find it difficult to provide even one clock in my room.