“The beauty of Mars exists in the human mind,” he said in that dry factual tone, and everyone stared at him amazed. “Without the human presence it is just a collection of atoms, no different than any other random speck of matter in the universe. It’s we who understand it, and we who give it meaning. All our centuries of looking up at the night sky and watching it wander through the stars. All those nights of watching it through the telescopes, looking at a tiny disk trying to see canals in the albedo changes. All those dumb sci-fi novels with their monsters and maidens and dying civilizations. And all the scientists who studied the data, or got us here. That’s what makes Mars beautiful. Not the basalt and the oxides”

“We should conceive of ourselves not as rulers of Earth, but as highly powerful, conscious stewards: The Earth is given to us in trust, and we can screw it up or make it work well and sustainably.”

“You can never properly predict the future as it really turns out. So you are doing something a little different when you write science fiction. You are trying to take a different perspective on now.”

“For me, art in our time is strongest when it is aware of science, includes science, is inspired by science, or is about science. On the linguistic level, the new words coined by scientists to describe their new discoveries form a giant growing lexicon that means English is simply bursting with new possibilities, resembling the Elizabethan age in that respect. Then conceptually, science is creating new stories to tell, by deluging us with new information and potentialities. In this deluge we need art to do its usual job of sorting things out, by giving things their human dimension and by exploring how they might feel and what they might mean. So to me the arts and the sciences are completely intertwined. Maybe that's always been true, but now more than ever.”

“If democracy and self-rule are the fundamentals, then why should people give up these rights when they enter their workplace? In politics we fight like tigers for freedom, for the right to elect our leaders, for freedom of movement, choice of residence, choice of what work to pursue— control of our lives, in short. And then we wake up in the morning and go to work, and all those rights disappear. We no longer insist on them. And so for most of the day we return to feudalism. That is what capitalism is— a version of feudalism in which capital replaces land, and business leaders replace kings. But the hierarchy remains. And so we still hand over our lives’ labor, under duress, to feed rulers who do no real work.”

“They tell each other what they are thinking. But there is no reason to believe anything they say.”

“Efficiency was just a measurement of how fast money moved from the poor to the rich. We prefer the opposite of efficiency, which is to say, justice.”

“You have a mind like the rings of Saturn. A million miles wide and an inch deep.”

“...knowing too that [the sky] was just a kind of rainbow made it glorious. A rainbow that was blue everywhere and covered everything.”

“We had a project on this trip back to the solar system, and that project was a labor of love. It absorbed all our operations entirely. It gave a meaning to our existence. And this is a very great gift; this, in the end, is what we think love gives, which is to say meaning. Because there is no very obvious meaning to be found in the universe, as far as we can tell. But a consciousness that cannot discern a meaning in existence is in trouble, very deep trouble, for at that point there is no organizing principle, no end to the halting problems, no reason to live, no love to be found. No: meaning is the hard problem.”

“You can only kill disappointment with a new try.”