“The visions we offer our children shape the future.”

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.

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

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.

Nature is unsentimental. Death is built in.

We are star stuff which has taken its destiny into its own hands.