Textbooks describe DNA as a blueprint for a body. It's better seen as a recipe for making a body, because it is irreversible. But today I want to present it as something different again, and even more intriguing. The DNA in you is a coded description of ancient worlds in which your ancestors lived. DNA is the wisdom out of the old days, and I mean very old days indeed.

Why do more than 40 percent of Americans think that the Universe began after the domestication of the dog?

I think from my point of view - I won't say it doesn't matter whether [Darwinian explanations] are right or wrong, it's just sufficient in some cases, for me, to be able to say, Well, at least it's not totally implausible from a Darwinian point of view.

I'm not one of those who wants to purge our society of our Christian history.

The recurrent laryngeal nerve - which runs from the head to the voice box - goes all the way down into the chest, loops around a major artery, then goes all the way back up again. It goes right past the larynx on the way down. All a decent designer would have to do is loop it off at that point. What we're looking at is the legacy of history.

Two religions cannot both be right, because they contradict each other, yet they can both be wrong.

Barring a theoretical resolution, which I think is unlikely, you either have to say there are zillions of parallel universes out there that we can't observe at present or you have to say there was a plan. I actually find the argument of the existence of a God who did the planning more compelling than the bubbling of all these multiverses.