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.

If someone does something we disapprove of, we regard him as bad if we believe we can deter him from persisting in his conduct, but we regard him as mad if we believe we cannot.

All drugs of any interest to any moderately intelligent person in America are now illegal.

Involuntary mental hospitalization is like slavery. Refining the standards for commitment is like prettifying the slave plantations. The problem is not how to improve commitment, but how to abolish it

A person cannot make another happy, but he can make him unhappy. This is the main reason why there is more unhappiness than happiness in the world.

The battle for the world is the battle for definitions.

Science can give us power over nature, but it cannot give us power over human nature.