“Perhaps the key to his longevity and the feeling of constant rejuvenation in his music lies in his attitude to writing it. ‘I go to bed every night, and just before I go to sleep I read one or two pages of Proust. This gives me a great deal of pleasure, so one of the things about music is that I want to write something that gives me pleasure. I would never write anything that didn’t say something to me that I thought was important or interesting’.”