In the deepest sense the search for extraterrestrial intelligence is a search for ourselves.

Science is a collaborative enterprise, spanning the generations. When it permits us to see the far side of some new horizon, we remember those who prepared the way - seeing for them also.

It is said that men may not be the dreams of the god, but rather that the gods are the dreams of men.

Man is the matter of the cosmos, contemplating itself.

We are the only species on the planet, so far as we know, to have invented a communal memory stored neither in our genes nor in our brains. The warehouse of this memory is called the library

It means nothing to be open to a proposition we don't understand.

Whatever the reason you're on Mars, I'm glad you're there, and I wish I was with you.