Religion and science, for example, are often though to be opponents, but as I have shown, the insights of ancient religions and of modern science are both needed to reach a full understanding of human nature and the conditions of human satisfaction. The ancients may have known little about biology, chemistry, physics, but many were good psychologists.

People can believe pretty much whatever they want to believe about moral and political issues, as long as some other people near them believe it, so you have to focus on indirect methods to change what people want to believe.

The most powerful force ever known on this planet is human cooperation - a force for construction and destruction.

Religious experiences are real and common, whether or not God exists, and these experiences often make people whole and at peace.

If you get something for nothing, part of you may be pleased, but part of you moves your hand to give something back.

Trying to run Congress without human relationships is like trying to run a car without motor oil. Should we be surprised when the whole thing freezes up?

The initial organization of the brain does not depend that much on experience. Nature provides a first draft, which experience then revises.