I cannot accept any concept of God based on the fear of life or the fear of death, or blind faith. I cannot prove to you that there is no personal God, but if I were to speak of him I would be a liar.

The number of natural hypothesis that can explain any given phenomena is infinite.

I have no special talent. I am only passionately curious.

Even if only 2 percent of those assigned to perform military service should announce their refusal to fight, governments would be powerless, they would not dare send such a large number of people to jail.

Give back to the world at least what you've received.

Imagination is vastly more important than intelligence.

Each makes this cosmos and its construction the pivot of his emotional life, in order to find in this way peace and security which he can not find in the narrow whirlpool of personal experience.