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

Only small minds are impressed by large numbers.

The more wonderful the means of communication, the more trivial, tawdry, or depressing its contents seemed to be.

It is vital to remember that information - in the sense of raw data - is not knowledge, that knowledge is not wisdom, and that wisdom is not foresight. But information is the first essential step to all of these.

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.

Religion is a by-product of fear. For much of human history it may have been a necessary evil, but why was it more evil than necessary? Isn’t killing people in the name of god a pretty good definition of insanity?

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