You can't choose your childhood, it's just what happens to you. But after that you choose. And that's really what (makes you).

The invisible hand never picks up the check.

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.

Below the 40th latitude there is no law; below the 50th no god; below the 60th no common sense and below the 70th no intelligence whatsoever.

The only part of an argument that really matters is what we think of the people arguing. X claims a, Y claims b. They make arguments to support their claims with any number of points. But when their listeners remember the discussion, what matters is simply that X believes a and Y believes b. People then form their judgment on what they think of X and Y.

We are here to inscribe ourselves on the universe, and it is not inappropriate to remind ourselves of this when blank slates are given us.

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.