"I don’t need more than three hours a night. Not since I started meditating twice a day. Ten minutes of that is as good as two hours sleep, believe me. I’ve got an overactive dopaminergic circuit, Geraint tells me. He once made me pee into some flask for one of his bloody experiments to test for some metabolites or other when we were at Cambridge. He did chromatography and assays on it and told me that, depending on how I handled it, I’d be either one of the best deckers in the business or a schizophrenic."