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.

Men often treat others worse than they treat themselves, but they rarely treat anyone better. It is the height of folly to expect consideration and decency from a person who mistreats himself.

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.

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 stupid neither forgive nor forget; the naive forgive and forget; the wise forgive but do not forget.

Mental illness, of course, is not literally a "thing" - or physical object - and hence it can "exist" only in the same sort of way in which other theoretical concepts exist.

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.