From an evolutionary point of view, sex is really just a reward mechanism to encourage us to pass on our genetic material.

Beulah has a husband?' I know. It's a miracle. There can't be more than two people on the planet who'd be willing to sleep with her, and here we are both in the same town.

People don't talk like this, theytalklikethis. Syllables, words, sentences run together like a watercolour left in the rain. To understand what anyone is saying to us we must separate these noises into words and the words into sentences so that we might in our turn issue a stream of mixed sounds in response.

Every atom you possess has almost certainly passed through several stars and been part of millions of organisms on its way to becoming you. We are each so atomically numberous and so vigorously recycled at death that a significant number of our atoms-up to a billion for each of us, it has been suggested-probably once belonged to Shakespeare. A billion more each came from Buddha and Genghis Khan and Beethoven, and any other historical figure you care to name.

The first book I did - the first successful book - was a kind of a travel book, and publishers in Britain encouraged me to do more.

You can be a scientist and believe in god: the two can go hand in hand.

But I got a great deal else from the experience. I learned to pitch a tent and sleep beneath the stars. For a brief, proud period I was slender and fit. I gained a profound respect for the wilderness and nature and the benign dark power of woods. I understand now, in a way I never did before, the colossal scale of the world. I found patience and fortitude that I didn't know I had. I discovered an America that millions of people scarcely know exists. I made a friend. I came home.