The living environment is the biosphere, the thin layer around the world of living organisms. We're part of that. Our existence is dependent on it in ways that people haven't even begun to appreciate. Our existence depends not just on its existence, but its stability and its richness.

Without a trace of irony I can say I have been blessed with brilliant enemies. I owe them a great debt, because they redoubled my energies and drove me in new directions.

I like what Abba Eban once said during the 1967 war. He said, "When all else fails, men turn to reason."

The true evolutionary epic, retold as poetry, is as intrinsically ennobling as any religious epic.

Science and religion are the two most powerful forces in the world. Having them at odds... is not productive.

I think that's my nature, to want to bring people together rather than to try to bombard them into agreement.

People need a sacred narrative. They must have a sense of larger purpose, in one form or another, however intellectualized. They will find a way to keep ancestral spirits alive.