We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.

I advocate world government because I am convinced that there is no other possible way of eliminating the most terrible danger in which man has ever found himself. The objective of avoiding total destruction must have priority over any other objective.

Outer changes always begin with an inner change of attitude.

I like to think the moon is there even if I am not looking at it.

The problems that exist in this world can not be solved by the level of thinking that created them.

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.

Every day, man is making bigger and better fool-proof things, and every day, nature is making bigger and better fools. So far, I think nature is winning.