Any technology distinguishable from magic is insufficiently advanced.

I would defend the liberty of consenting adult creationists to practice whatever intellectual perversions they like in the privacy of their own homes; but it is also necessary to protect the young and innocent.

Behind every man now alive stand thirty ghosts, for that is the ratio by which the dead outnumber the living.

When one has to ask, "Am I really in love?" the answer is always "No".

If I didn't exist, I would have invented myself.

The goal of the future is full unemployment, so we can play. That's why we have to destroy the present politico-economic system.

There is no reason to assume that the universe has the slightest interest in intelligence—or even in life. Both may be random accidental by-products of its operations like the beautiful patterns on a butterfly's wings. The insect would fly just as well without them.