Don't kid yourself that you're going to live again after you're dead; you're not. Make the most of the one life you've got. Live it to the full.

From a Darwinian perspective, it is clear what pain is doing. It's a warning: 'Don't do that again.' If you burn yourself, you're never going to pick up a live coal again.

We should not live by Darwinian principles. But Darwin explains how we got here.

You have to live life to its full chorizo.

I mean I think that when you've got a big brain, when you find yourself planted in a world with a brain big enough to understand quite a lot of what you see around you, but not everything, you naturally fall to thinking about the deep mysteries. Where do we come from? Where does the world come from? Where does the universe come from?

If you look up at the Milky Way through the eyes of Carl Sagan, you get a feeling in your chest of something greater than yourself. And it is. But it's not supernatural.