We are one of only three species on our planet that can claim to be self-aware, yet self-delusion may be a more significant characteristic of our kind.

Let's be clear. The planet is not in jeopardy. We are in jeopardy. We haven't got the power to destroy the planet - or to save it. But we might have the power to save ourselves.

Malcolm: A karate master does not kill people with his bare hands. He does not lose his temper and kill his wife. The person who kills is the person who has no discipline, no restraint, and who has purchased his power in the form of a Saturday night special. And that is why you think that to build a place like this is simple. Hammond: It was simple. Malcolm: Then why did it go wrong?

Most areas of intellectual life have discovered the virtues of speculation, and have embraced them wildly. In academia, speculation is usually dignified as theory.

Increasingly, the mathematics will demand the courage to face its implications.

Kids didn't have huge backpacks when I was their age. We didn't have backpacks at all. Now it seemed all the kids had them. You saw little second-graders bent over like sherpas, dragging themselves through the school doors under the weight of their packs. Some of the kids had their packs on rollers, hauling them like luggage at the airport. I didn't understand any of this. The world was becoming digital; everything was smaller and lighter. But kids at school lugged more weight than ever.

Yes, you have cancer. Yes, your kids are on drugs. Yes, there is an elephant outside your tent. Now the question becomes, What are you going to do about it? Subsequent emotions may not be pleasant, but the hysteria stops. Hysteria accompanies an unwillingness to look at what is really going on; it promotes an unwillingness to look. We feel we are afraid to look, when actually it is not-looking that makes us afraid. The minute we look, we cease being afraid.