I can mention many moments that were unforgettable and revelatory. But the most single revelatory three minutes was the first time I put on scuba gear and dived on a coral reef. It's just the unbelievable fact that you can move in three dimensions.

It never really occurred to me to believe in God.

They always mean beautiful things like hummingbirds. I always reply by saying that I think of a little child in east Africa with a worm burrowing through his eyeball. The worm cannot live in any other way, except by burrowing through eyeballs. I find that hard to reconcile with the notion of a divine and benevolent creator.

I'm a humanist. I'm neither one side nor the other.

I'm not over-fond of animals. I am merely astounded by them.

No one will protect what they don't care about, and no one will care about what they have never experienced.

Nothing in the natural world makes sense - except when seen in the light of evolution