All men are ignorant, just in different fields.

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

Man, surrounded by facts, permitting himself no surprise, no intuitive flash, no great hypothesis, no risk, is in a locked cell. Ignorance cannot seal the mind and imagination more securely.

Empathy is patiently and sincerely seeing the world through the other person's eyes. It is not learned in school; it is cultivated over a lifetime.

The most powerful force in the world is compound interest.

Never underestimate your own ignorance.

E=mc2. Energy equals mass times the speed of light squared