Over the next ten years, I predict, the mainstream of the environmental movement will reverse its opinion and activism in four major areas: population growth, urbaninzation, genetically engineered organisms, and nuclear power.

The amusements of broadcast consist mainly of songs, stories, and games, just as in tribal life. The songs and stories are mostly about courtship, the games mostly played by men, just as in tribal life.

There's no unemployment in squatter cities. Everyone works. One-sixth of humanity is there. It's soon going to be more than that.

The main problem with solar on the Earth's surface is that it is so intermittent, and we don't have decent storage yet.

Do what's good for humans, modeled on how humans already do things; ignore what's convenient for computers.

Carbon tax has the advantage of basically being able to subsidize one set of activities that you want with another set of activities that you don't want. It's like a cigarette tax.

The urgent finds you; you have to find the important. Importance is not fast. It is slow. It is not superficial. It is deep. And as a result, it's extremely powerful. When important matters go wrong, they undermine everything. When they go right, they sustain everything.