What it means to be human is to bring up your children in safety, educate them, keep them healthy, teach them how to care for themselves and others, allow them to develop in their own way among adults who are sane and responsibile, who know the value of the world and not its economic potential. It means art, it means time, it means all the invisibles never counted by the GDP and the census figures. It means knowing that life has an inside as well as an outside. And I think it means love.

She must find a boat and sail in it. No guarantee of shore. Only a conviction that what she wanted could exist, if she dared to find it.

I am getting much more political as I get older. It's the duty of any writer, in particular, not to stand back from the world.

What is it that you contain? The dead. Time. Light patterns of millennia opening in your gut. Every minute, in each of you, a few million potassium atoms succumb to radioactive decay. The energy that powers these tiny atomic events has been locked inside potassium atoms ever since a star-sized bomb exploded nothing into being. Potassium, like uranium and radium, is a long-lived radioactive nuclear waste of the supernova bang that accounts for you. Your first parent was a star.

Strange to dream in the right shape and build in the wrong shape, but maybe that is what we do every day, never believing that a dream could tell the truth.

Working-class families in the north of England used to hear the 1611 Bible regularly at church and at home ... for us, the language didn't seem too difficult. I especially liked 'the quick and the dead' - you really get a feel for the difference if you live in a house with mice and a mousetrap.

In a vacuum all photons travel at the same speed. They slow down when travelling through air or water or glass. Photons of different energies are slowed down at different rates. If Tolstoy had known this, would he have recognised the terrible untruth at the beginning of Anna Karenina? 'All happy families are alike; every unhappy family is unhappy in its own particular way.' In fact it's the other way around. Happiness is a specific. Misery is a generalisation. People usually know exactly why they are happy. They very rarely know why they are miserable.