We've poured our poisons into the world as though it were a bottomless pit.. and we go on gobbling them up. It's hard to imagine how the world could survive another century of this abuse, but nobody's really doing anything about it. It's a problem our children will have to solve, or their children.

Don't wait. Where do you expect to get by waiting? Doing is what teaches you. Doing is what leads to inspiration. Doing is what generates ideas. Nothing else, and nothing less.

[I]n Africa I was a member of a family—of a sort of family that the people of your culture haven't known for thousands of years. If gorillas were capable of such an expression, they would tell you that their family is like a hand, of which they are the fingers. They are fully aware of being a family but are very little aware of being individuals. Here in the zoo there were other gorillas—but there was no family. Five severed fingers do not make a hand.

It's the idea that people living close to nature tend to be noble. It's seeing all those sunsets that does it. You can't watch a sunset and then go off and set fire to your neighbor's tepee. Living close to nature is wonderful for your mental health.

The premise of the Taker story is 'the world belongs to man'. … The premise of the Leaver story is 'man belongs to the world'.

Thinkers aren't limited by what they know, because they can always increase what they know. Rather they're limited by what puzzles them, because there's no way to become curious about something that doesn't puzzle you.

We've poured our poisons into the world as though it were a bottomless pit.. and we go on gobbling them up. It's hard to imagine how the world could survive another century of this abuse, but nobody's really doing anything about it. It's a problem our children will have to solve, or their children.