Before God we are all equally wise - and equally foolish.

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

Ethical axioms are found and tested not very differently from the axioms of science. Truth is what stands the test of experience.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even incapable of forming such opinions.

I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

I never think of the future - it comes soon enough.

If I had only known, I would have been a locksmith.

If you are out to describe the truth, leave elegance to the tailor.

Imagination is more important than knowledge...


It is a miracle that curiosity survives formal education.

Laws alone can not secure freedom of expression; in order that every man present his views without penalty there must be spirit of tolerance in the entire population.

My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.

Nothing will benefit human health and increase the chances for survival of life on Earth as much as the evolution to a vegetarian diet.