We are star stuff harvesting sunlight. - Carl Sagan

"Science is a way of thinking much more than it is a body of knowledge."

"In that case, on behalf of Earthlife, I urge that, with full knowledge of our limitations, we vastly increase our knowledge of the Solar System and then begin to settle other worlds."

"Somewhere, something incredible is waiting to be known."

"We are all star stuff."

"The world is so exquisite with so much love and moral depth, that there is no reason to deceive ourselves with pretty stories for which there's little good evidence. Far better it seems to me, in our vulnerability, is to look death in the eye and to be grateful every day for the brief but magnificent opportunity that life provides."