Clear thinking requires courage rather than intelligence.

In the animal kingdom, the rule is, eat or be eaten; in the human kingdom, define or be defined.

The basic ingredients of psychotherapy are religion, rhetoric, and repression, which are themselves mutually overlapping categories.

A child becomes an adult when he realizes that he has a right not only to be right but also to be wrong.

Doubt is to certainty as neurosis is to psychosis. The neurotic is in doubt and has fears about persons and things; the psychotic has convictions and makes claims about them. In short, the neurotic has problems, the psychotic has solutions.

The FDA calls certain substances "controlled." But there are no "controlled substances," there are only controlled citizens.

Clear thinking requires courage rather than intelligence.