Men are afraid to rock the boat in which they hope to drift safely through life's currents, when, actually, the boat is stuck on a sandbar. They would be better off to rock the boat and try to shake it loose.

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

The stupid neither forgive or forget; the naive forgive and forget; the wise forgive but do not forget.

Clear thinking requires courage rather than intelligence.

Happiness is an imaginary condition, formerly attributed by the living to the dead, now usually attributed by adults to children, and by children to adults.

Masturbation: the primary sexual activity of mankind. In the nineteenth century it was a disease; in the twentieth, it's a cure.

People often say that this or that person has not yet found himself. But the self is not something one finds, it is something one creates.

Formerly, when religion was strong and science weak, men mistook magic for medicine; now, when science is strong and religion weak, men mistake medicine for magic.

Two wrongs don't make a right, but they make a good excuse.

Knowledge is gained by learning; trust by doubt; skill by practice; and love by love.

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.

Insanity is the only sane reaction to an insane society.

If you talk to God, you are praying. If God talks to you, you have schizophrenia.

The proverb warns that 'You should not bite the hand that feeds you.' But maybe you should, if it prevents you from feeding yourself.

Every act of conscious learning requires the willingness to suffer an injury to one's self-esteem. That is why young children, before they are aware of their own self-importance, learn so easily; and why older persons, especially if vain or important, cannot learn at all.

When a person can no longer laugh at himself, it is time for others to laugh at him.