My own diagnosis of my problem is a simpler one. It's that I share 50 per cent of my genome with a banana and 98 per cent with a chimpanzee. Banana's don't do psychological consistency. And the tiny part of us that's different - the special Homo sapiens bit - is faulty. It doesn't work. Sorry about that.

Have you ever been lonely? No, neither have I. Solitary, yes. Alone, certainly. But lonely means minding about being on your own. I've never minded about it.

One of the hardest things about being alive is being with other people.

Memory is the only thing that binds you to earlier selves; for the rest, you become an entirely different being every decade or so, sloughing off the old persona, renewing and moving on. You are not who you were, he told her, nor who you will be.

Busy is good, isn't it? Busy means we're hard at it, achieving our ends or "goals." Haven't had time to stop, or look around or think. That's considered the sign of a life well lived ... Suppose, though, you're not sure that what you're doing is at all worthwhile. Suppose you blundered into it over a spoonful of lime pickle. It's easy, it pays quite well. But really it's a distraction. It stops you thinking about what you ought to be doing.

If you have only one life, you cant altogether ignore the question: are you enjoying it?

The thunder of false modesty was deafening.