The greatest tragedy of human existence is the illusion of separateness.

Intuitive powers played a central role in my scientific work, not wild speculation, yet a valued resource when no other approach was available.

Unlimited competition leads to a huge waste of labor, and to that crippling of the social consciousness of individuals.

From the viewpoint of a Jesuit priest I am, of course, and have always been an atheist.

If a theory can not be explained to a child, then the theory is probably worthless.

As long as I have any choice in the matter, I shall live only in a country where civil liberty, tolerance and equality of all citizens before the law prevail.

Man usually avoids attributing cleverness to somebody else unless it is an enemy.