My first rule of travel is never to go to a place that sounds like a medical condition and Critz is clearly an incurable disease involving flaking skin.

Anyone who has read my books will know that I don't tend to use guides when I am travelling. It's not a pride thing, but it is certainly a fact.

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.

For most of us the rules of English grammar are at best a dimly remembered thing. But even for those who make the rules, grammatical correctitude sometimes proves easier to urge than to achieve. Among the errors cited in this book are a number committed by some of the leading authorities of this century. If men such as Fowler and Bernstein and Quirk and Howard cannot always get their English right, is it reasonable to expect the rest of us to?

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.

It was one of those sumptuous days when the world is full of autumn muskiness and tangy, crisp perfection: vivid blue sky, deep green fields, leaves in a thousand luminous hues. It is a truly astounding sight when every tree in a landscape becomes individual, when each winding back highway and plump hillside is suddenly and infinitely splashed with every sharp shade that nature can bestow - flaming scarlet, lustrous gold, throbbing vermilion, fiery orange.

I had to drive to Minneapolis once, and went on a back road just to see the country. But there was nothing to see. It's just flat and hot, and full of corn and soybeans and hogs. Every once in a while you come across a farm or some dead little town where the liveliest thing is the flies.