My professional and human obsession is the nature of language, and my best relationships are with other writers. In many ways, I know George Eliot better than I know my husband.

I sort of mind living in a time when most of the literature is terribly personal. I suppose it's because I grew up on a love of history, philosophy, science and religion, but not to think too much about yourself.

You learn different things through fiction. Historians are always making a plot about how certain things came to happen. Whereas a novelist looks at tiny little things and builds up a sort of map, like a painting, so that you see the shapes of things.

I like feeling my way into different minds and experiences. It comes naturally and always has.

I sort of feel that climate change will be solved by science. I just feel instinctively that we will find a way of saving ourselves. But I am less confident that we won't destroy ourselves in other ways.

We get the exciting result that the total energy of the universe is zero. Why this should be so is one of the great mysteries - and therefore one of the important questions of physics. After all, what would be the use of studying physics if the mysteries were not the most important things to investigate?

The man of science has learned to believe in justification, not by faith, but by verification.

The Jetsons had them in the 1960s. They were the defining element of 'Knight Rider' in the 1980s: cars that drive themselves. Self-driving cars appear in countless science fiction movies. By Hollywood standards, they are so normal we don't even notice them. But in real life, they still don't exist. What if you could buy one today?