Keep a light, hopeful heart. But ­expect the worst.

I compose most of my tweets with care, as if they were aphorisms - they are not usually dashed-off. Sometimes I'm surprised by the high, poetic quality of Twitter - it lends itself to a surreal sort of self-expression.

Cherie, keep walking. Shut your eyes. We are headed for the bridge. We are going to cross it.

The written word, obviously, is very inward, and when we're reading, we're thinking. It's a sort of spiritual, meditative activity. When we're looking at visual objects, I think our eyes are obviously directed outward, so there's not as much reflective time. And it's the reflectiveness and the spiritual inwardness about reading that appeals to me.

Life is like boxing in many unsettling respects. But boxing is only like boxing.

Henry James's later works would have been better had he resisted that curious sort of self-indulgence, dictating to a secretary. The roaming garrulousness of ordinary speech is usually corrected when it's transcribed into written prose.

I write in longhand and assemble lots of notes, and then I try to collate them into a coherent chronology. It's like groping along in the dark. I like writing and find it challenging, but I don't find it easy.