Civilization will reach maturity only when it learns to value diversity of character and of ideas.

The limits of the possible can only be defined by going beyond them into the impossible.

I don't believe in astrology; I'm a Sagittarius and we're skeptical.

The only way to define your limits is by going beyond them.

The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.

The moon is the first milestone on the road to the stars.

I'm sure the universe is full of intelligent life. It's just been too intelligent to come here.

Any sufficiently advanced technology is indistinguishable from magic.

There is hopeful symbolism in the fact that flags do not wave in a vacuum.

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.

Until we get rid of religion, we won't be able to conduct the search for God.

Fiction should be a place of lollipops and escape. Real life is depressing enough--I, for one, don't want to read about make believe misery, too.

Pushing through fear was what eventually set you free.

As water collected in a tank gets pure by filtration, so accumulated wealth is preserved by being employed in charity.

The first fact about the celebration of a birthday is that it is a way of affirming defiantly, and even flamboyantly, that it is a good thing to be alive.

It is the illusion of knowledge, not ignorance, that keeps one from growing.

[Donald Trump] said it's against affordable health care for poor people and will not fight to raise wages for working poor people, that's pushing all of them in terms of policy.

I think most of the people involved in any art always secretly wonder whether they are really there because they're good or there because they're lucky.

The understanding of some men is clear, that of others brilliant. The former illumines its surroundings; the latter obscures them.

A boy can be two, three, four potential people, but a man is only one. He murders the others.

History is a series of approximations of the final singularity.