There is no psychology; there is only biography and autobiography.

If the dead talk to you, you are a spiritualist; if God talks to you, you are a schizophrenic.

Classifying thoughts, feelings and behaviors as diseases is a logical and semantic error, like classifying whale as fish.

I favor free trade in drugs for the same reason the Founding Fathers favored free trade in ideas: in a free society it is none of the government's business what ideas a man puts into his mind; likewise, it should be none of its business what drugs he puts into his body.

The less a person knows about the workings of the social institutions in his society, the more he must trust those who wield power in it; and the more he trusts those who wield such power, the more vulnerable he makes himself to becoming their victim.

The many faces of intimacy: the Victorians could experience it through correspondence, but not through cohabitation; contemporary men and women can experience it through fornication, but not through friendship.

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.