It is always quietly thrilling to find yourself looking at a world you know well but have never seen from such an angle before.

Isn´t it strange how wealth is always wasted on the rich?

I sat on a toilet watching the water run thinking what an odd thing tourism is. You fly off to a strange land, eagerly abandoning all the comforts of home and then expend vast quantities of time and money in a largely futile effort to recapture the comforts you wouldn’t have lost if you hadn’t left home in the first place.

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.

Clearly, some time ago makers and consumers of American junk food passed jointly through some kind of sensibility barrier in the endless quest for new taste sensations. Now they are a little like those desperate junkies who have tried every known drug and are finally reduced to mainlining toilet bowl cleanser in an effort to get still higher.

Every dog on the face of the earth wants me dead.

If this book has a lesson, it is that we are awfully lucky to be here-and by ‘we’ I mean every living thing. To attain any kind of life in this universe of ours appears to be quite an achievement. As humans we are doubly lucky, of course: We enjoy not only the privilege of existence but also the singular ability to appreciate it and even, in a multitude of ways, to make it better. It is a talent we have only barely begun to grasp.

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

Disassemble the cells of a sponge (by passing them through a sieve, for instance), then dump them into a solution, and they will find their way back together and build themselves into a sponge again. You can do this to them over and over, and they will doggedly reassemble because, like you and me and every other living thing, they have one overwhelming impulse: to continue to be.

I had spent the whole of my savings … on a suit for the wedding – a remarkable piece of apparel with lapels that had been modelled on the tail fins of a 1957 Coupe de Ville and trousers so copiously flared that when I walked you didn’t see my legs move.

The best that can be said for Norwegian television is that it gives you the sensation of a coma without the worry and inconvenience.

My favourite fellow of the Royal Society is the Reverend Thomas Bayes, an obscure 18th-century Kent clergyman and a brilliant mathematician who devised a complex equation known as the Bayes theorem, which can be used to work out probability distributions. It had no practical application in his lifetime, but today, thanks to computers, is routinely used in the modelling of climate change, astrophysics and stock-market analysis.