Think of a single problem confronting the world today. Disease, poverty, global warming... If the problem is going to be solved, it is science that is going to solve it. Scientists tend to be unappreciated in the world at large, but you can hardly overstate the importance of the work they do. If anyone ever cures cancer, it will be a guy with a science degree. Or a woman with a science degree.

By the time I had finished my coffee and returned to the streets, the rain had temporarily abated, but the streets were full of vast puddles where the drains where unable to cope with the volume of water. Correct me if I'm wrong, but you would think that if one nation ought by now to have mastered the science of drainage, Britain would be it.

It isn't easy to become a fossil. ... Only about one bone in a billion, it is thought, becomes fossilized. If that is so, it means that the complete fossil legacy of all the Americans alive today - that's 270 million people with 206 bones each - will only be about 50 bones, one-quarter of a complete skeleton. That's not to say, of course, that any of these bones will ever actually be found.

Most big companies don't like you very much, except hotels, airlines and Microsoft, which don't like you at all.

A third...candidate for Shakespearean authorship was Christopher Marlowe. He was the right age (just two months older than Shakespeare), had the requisite talent, and would certainly have had ample leisure after 1593, assuming he wasn't too dead to work.

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.

What this means in practice is that if you are not a born worrier you have nothing to worry about (though of course you wouldn't be worrying anyway), whereas if you are a worrier by nature there is absolutely nothing you can do about it, so you may as well stop worrying, except of course you can't.