The sky was the colour of sad weddings.

So if we're all quarks and electrons ..." he begins. What?" We could make love and it would be nothing more than quarks and electrons rubbing together." Better than that," I say. "Nothing really 'rubs together' in the microscopic world. Matter never really touches other matter, so we could make love without any of our atoms touching at all. Remember that electrons sit on the outside of atoms, repelling other electrons. So we could make love and actually repel each other at the same time.

One minute I was playing chess and doing maths all the time, the next I had been rerouted into more 'normal' girls' activities: reading, writing stories and worrying about my clothes.

Most people would look at an animal in a cage and instinctively feel that it should be set free. . . . It's a dangerous world out there, filled with predators. . . . What would you prefer? A comfortable, safe, warm, cosy life in a cage, or an uncertain life of freedom.

People make events into stories. Stories give events meaning.

In some ways I'm a frustrated scientist or mathematician. The amount of times I've thought I'd go back to university and do theoretical physics because I like the big questions, but really I know now that that's not quite me. What's me is to do it in novels.

Everything I know I imagine everyone else knows as well. And then everything that everyone else knows I imagine they know on top of what I know, so I'm constantly anxious about what everyone else knows.