The absolutist lays down the law, but the relativist hears only roaring and bawling. Or, when the relativist voice, as it is heard from philosophers such as Nietzsche or James, itself starts to grate and sounds shrill, as it often does, and when the relativist then offers concessions, the absolutist hears only insincerity. The war of words can often turn into a dialogue of the deaf, and this too if part of its power to arouse outrage and fury.

There may be rhetoric about the socially constructed nature of Western science, but wherever it matters, there is no alternative. There are no specifically Hindu or Taoist designs for mobile phones, faxes or televisions. There are no satellites based on feminist alternatives to quantum theory. Even that great public sceptic about the value of science, Prince Charles, never flies a helicopter burning homeopathically diluted petrol, that is, water with only a memory of benzine molecules, maintained by a schedule derived from reading tea leaves, and navigated by a crystal ball.

Chance is as relentless as necessity.

In Michigan recently a man won a lawsuit for substantial damages because, he claimed, a rear-end collision in his car had made him a homosexual.

There are normal times when it is wholly admirable to be steadfast, resolute, unconflicted, and therefore when integrity is unmistakenly a virtue. The person of integrity knows what to do, and does it. But as we have been exploring, there are also times when certainty and single-mindedness indicate something less admirable: a deafness to voices that should be heard or a blindness to aspects of a situation that need to be considered.

The absolutist trumpets his plain vision; the relativist sees only someone who is unaware of his own spectacles.

The absolutist takes himself to read nature in her very own language, but the relativist insists that nature does not speak, and we hear only what we have elected to hear.