“I don’t want to believe. I want to know.”

The only thing we’ve found that makes the emptiness bearable, is each other.

Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.

If it can be destroyed by the truth, it deserves to be destroyed by the truth.

Your god is too small for my universe.

A galaxy is composed of gas and dust and stars – billions upon billions of stars. Every star may be a sun to someone.

One of the great commandments of science is: Mistrust arguments from authority.

Extinction is the rule. Survival is the exception.

If we ruin the earth, there is no place else to go.

The significance of our lives and our fragile planet is then determined only by our own wisdom and courage.

All civilizations become either spacefaring or extinct.

If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.

Across the sea of space, the stars are other suns.

You are worth about 3 dollars worth in chemicals.

We live on a mote of dust suspended in a sunbeam.

We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.

For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.

There is no heresy or no philosophy which is so abhorrent to the church as a human being.

Be an atheist if you want, but do not believe in anything unquestioningly.

Open your mouth and shut your eyes and see what Zeus will send you.

Surely you do not believe in the gods. What’s your argument? Where’s your proof?

I’m not a slave to a God that doesn’t exist, and I’m not a slave to a world that doesn’t give a shit.

Reality is what it is, not what you want it to be.

She believed in nothing. Only her scepticism kept her from being an atheist.

An atheist is a man who watches a Notre Dame – Southern Methodist University game and doesn’t care who wins.