We’ll all say that. We’ll all go on and make the place safe. Roads, cities. New sky, new soil. Until it’s all some kind of Siberia or Northwest Territories, and Mars will be gone and we’ll be here, and we’ll wonder why we feel so empty. Why when we look at the land we can never see anything but our own faces.

Many of the technologies we've invented are necessary to keep 6.5 billion people alive. We can't go back from that, so we need to decarbonize really rapidly.

It was not power that corrupted people, but fools who corrupted power.

Whistling together. Some kind of performance. I mean, not just a conversation, but a performance.

What kind of Dv would it take to escape history, to escape an inertia that powerful, and carve a new course? The hardest part is leaving Earth behind.

Life is insanely robust, though we can make species go extinct, and this is the bad thing. So I always make the point that you can't say, 'Is it too late?' That is the terrible question, because either answer promotes inaction. If it's too late, you don't need to act; if it's not too late, you don't need to act.

First you fall in love with Antarctica, and then it breaks your heart.