I went to boarding school and then I went to Oxford, and I know how easy it is for certain groups of people to become wholly insulated from ordinary life.

With English literature, if you do a bit of shonky spelling, no one dies, but if you're half-way through a maths calculation and you stick in an extra zero, everything just crashes into the ravine.

I've worked in television long enough to know that when you stop enjoying that type of thing you go home and do something else.

I started writing books for children because I could illustrate them myself and because, in my innocence, I thought they'd be easier.

Everyone has learning difficulties, because learning to speak French or understanding relativity is difficult.

And people who believe in God think God has put human beings on earth because they think human beings are the best animal, but human beings are just an animal and they will evolve into another animal, and that animal will be cleverer and it will put human beings into a zoo, like we put chimpanzees and gorillas into a zoo. Or human beings will all catch a disease and die out or they will make too much pollution and kill themselves, and then there will only be insects in the world and they will be the best animal.

At teenage parties he was always wandering into the garden, sitting on a bench in the dark . . . staring up at the constellations and pondering all those big questions about the existence of God and the nature of evil and the mystery of death, questions which seemed more important than anything else in the would until a few years passed and some real questions had been dumped into your lap, like how to earn a living, and why people fell in and out of love, and how long you could carry on smoking and then give up without getting lung cancer.