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

We stand now at the turning point between two eras. Behind us is a past to which we can never return...

It may be that our role on this planet is not to worship God - but to create him.

I have great faith in optimism as a guiding principle, if only because it offers us the opportunity of creating a self-fulfilling prophecy.

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.

I sometimes think that the universe is a machine designed for the perpetual astonishment of astronomers.

I don't believe in God but I'm very interested in her.