You shouldn't be looking for the secret to making people follow fads, you should be looking for the secret to making them think for themselves. Because that's what science is all about.

Why do only the awful things become fads? I thought. Eye-rolling and Barbie and bread pudding. Why never chocolate cheesecake or thinking for yourself?

I was on a walking tour of Oxford colleges once with a group of bored and unimpressable tourists. They yawned at Balliol's quad, T.E. Lawrence's and Churchill's portraits, and the blackboard Einstein wrote his E=mc2 on. Then the tour guide said, 'And this is the Bridge of Sighs, where Lord Peter proposed (in Latin) to Harriet,' and everyone suddenly came to life and began snapping pictures. Such is the power of books.

Don't they know science doesn't work like that? You can't just order scientific breakthroughs. They happen when you are looking at something you've been working on for years and suddenly see a connection you never noticed before, or when you're looking for something else altogether. Sometimes they even happen by accident. Don't they know you can't get a scientific breakthrough just because you want one?

TO ALL THE ambulance drivers firewatchers air-raid wardens nurses canteen workers airplane spotters rescue workers mathematicians vicars vergers shopgirls chorus girls librarians debutantes spinsters fishermen retired sailors servants evacuees Shakespearean actors and mystery novelists WHO WON THE WAR.

A Grand Design we couldn't see because we were part of it. A Grand Design we only got occasional, fleeting glimpses of. A Grand Design involving the entire course of history and all of time and space that, for some unfathomable reason, chose to work out its designs with cats and croquet mallets and penwipers, to say nothing of the dog. And a hideous piece of Victorian artwork. And us.

When you're a writer, the question people always ask you is, "Where do you get your ideas?" Writers hate this question. It's like asking Humphrey Bogart in The African Queen, "Where do you get your leeches?" You don't get ideas. Ideas get you.