Any fool can make things bigger, more complex, and more violent. It takes a touch of genius-and a lot of courage-to move in the opposite direction.

Heroism on command, senseless violence, and all the loathsome nonsense that goes by the name of patriotism - how passionately I hate them!

All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.

Never do anything against conscience even if the state demands it.

Nothing is more destructive of respect for the government and the law of the land than passing laws which cannot be enforced.

One strength of the communist system of the East is that it has some of the character of a religion and inspires the emotions of a religion.

Politics is for the present, but an equation is for eternity.

Perfection of means and confusion of ends seem to characterize our age.

The attempt to combine wisdom and power has only rarely been successful and then only for a short while.

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

We shall require a substantially new manner of thinking if mankind is to survive.

The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.