Five per cent vision is better than no vision at all. Five per cent hearing is better than no hearing at all. Five per cent flight efficiency is better than no flight at all. It is thoroughly believable that every organ or apparatus that we actually see is the product of a smooth trajectory through animal space, a trajectory in which every intermediate stage assisted survival and reproduction.

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.

It is possible to enjoy the Mozart concerto without being able to play the clarinet. In fact, you can learn to be an expert connoisseur of music without being able to play a note on any instrument. Of course, music would come to a halt if nobody ever learned to play it. But if everybody grew up thinking that music was synonymous with playing it, think how relatively impoverished many lives would be. Couldn't we learn to think of science in the same way?

We have to find our own purposes in life, which are not derived directly from our scientific history.

The God of the Old testament is arguably the most unpleasant character in all fiction.

Regarding the accusations of sexual abuse of children by Catholic priests, deplorable and disgusting as those abuses are, they are not so harmful to the children as the grievous mental harm in bringing up the child Catholic in the first place.

Evolution is just a theory? Well, so is gravity and I don't see you jumping out of buildings.