Science has taught us, against all intuition, that apparently solid things like crystals and rocks are really almost entirely composed of empty space. And the familiar illustration is the nucleus of an atom is a fly in the middle of a sports stadium, and the next atom is in the next sports stadium.

I am utterly fed up with the respect we have been brainwashed into bestowing upon religion.

The Roman Catholic Church is an institution for whose gains the phrase "ill-gotten" might have been specially invented. And of all its money-making rip-offs, the selling of indulgences must surely rank among the greatest con tricks in history, the medieval equivalent of the Nigerian Internet scam but far more successful.

Most people understand that sexual lust has to do with propagating genes. Copulation in nature tends to lead to reproduction and so to more genetic copies. But in modern society, most copulations involve contraception, designed precisely to avoid reproduction. Altruism probably has origins like those of lust.

Bush and bin Laden are really on the same side: the side of faith and violence against the side of reason and discussion. Both have implacable faith that they are right and the other is evil.

It's known that stress gives rise to disease. It's also known that many diseases, especially stress-related diseases, can be cured by placebos - pills that have no medicinal effect, but people think they do, and so they do.

The idea of a divine creator belittles the elegant reality of the universe.