I have never looked upon ease and happiness as ends in themselves. This ethical basis I call the ideal of the pigsty.

Compound interest on debt was the banker's greatest invention, to capture, and enslave, a productive society.

To have security against atomic bombs and against the other biological weapons, we have to prevent war, for if we cannot prevent war every nation will use every means that is at their disposal; and in spite of all promises they make, they will do it. At the same time, so long as war is not prevented, all the governments of the nations have to prepare for war, and if you have to prepare for war, then you are in a state where you cannot abolish war.

I refuse to make money out of my science. My laurel is not for sale like so many bales of cotton.

The flag is a symbol of the fact that man is still a herd animal.

It is every man's obligation to put back into the world at least the equivalent of what he takes out of it.

The hardest thing to understand in the world is the income tax.