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

I am really interested in eccentric minds. It's rather like being fascinated by how cars work. It's really boring if your car works all the time. But as soon as something happens, you get the bonnet up. If someone has an abnormal or dysfunctional state of mind, you get the bonnet up.

Most murders are committed by someone who is known to the victim. In fact, you are most likely to be murdered by a member of your own family on Christmas day.

Being clever was when you looked at how things were and used the evidence to work out something new.

At twenty life was like wrestling an octopus. Every moment mattered. At thirty it was a walk in the country. Most of the time your mind was somewhere else. By the time you got to seventy, it was probably like watching snooker on the telly.

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.

The way of creating believable characters is not by conforming to a set of PC rules.