Astronomers are pure of heart and appealingly puerile. They look into the midnight sky and ask big questions, just as we did when we were in college: Who are we? Where do we come from? And why are we standing around outside on the night before finals, do we want to end up making elevator parts for a living like our father or what?

evolution is a tinkerer, an ad-hocker, and a jury-rigger. It works with what it has on hand, not with what it has in mind. Some of its inventions prove elegant, while in others you can see the seams and dried glue.

The beauty of the natural world lies in the details.

I'm an Atheist. I don't believe in God, Gods, Godlets or any sort of higher power beyond the universe itself, which seems quite high and powerful enough to me.

Who needs a handgun when you've got a semiautomatic?

Scientists have discovered that the small, brave act of cooperating with another person, of choosing trust over cynicism, generosity over selfishness, makes the brain light up with quiet joy.

When I sent out a casual and nonscientific poll of my own to a wide cast of acquaintances, friends and colleagues, I was surprised, but not really, to learn that maybe 60 percent claimed a belief in a God of some sort, including people I would have bet were unregenerate skeptics. Others just shrugged. They don't think about this stuff. It doesn't matter to them. They can't know, they won't beat themselves up trying to know and for that matter they don't care if their kids believe or not.