All meaningful and lasting change starts first in your imagination and then works its way out. Imagination is more important than knowledge.

Political leaders or governments owe their position partly to force and partly to popular election. They cannot be regarded as representative of best elements, morally or intellectually, in their respective nations.

Since the mathematicians have invaded the theory of relativity I do not understand it myself any more.

What separates me from most so-called atheists is a feeling of utter humility toward the unattainable secrets of the harmony of the cosmos.

The fairest thing we can experience is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science. It is the source of all true art and science. He who knows it not and can no longer wonder, no longer feel amazement, is as good as dead, a snuffed-out candle.

Learning is experience. Everything else is just information.

Peace cannot be kept by force; it can only be achieved by understanding.