You're sick. Sick and evil and weird.

The Time Lords really didn't like genocide. I'm not too keen on it myself. It's the potential you're killing off. What if, one day, there was a good Dalek? What if...

I know that the way to be a really successful writer is to write the same kind of book over and over again. Find the kind of thing that people like and just write one of those over and over again. I don't do that. I just keep doing different things.

You have to finish things - that's what you learn from, you learn by finishing things.

We make choices. No one else can live our lives for us. And we must confront and accept the consequences of our actions.

It used to be thought that the events that changed the world were things like big bombs, maniac politicians, huge earthquakes, or vast population movements, but it has now been realized that this is a very old-fashioned view held by people totally out of touch with modern thought. The things that really change the world, according to Chaos theory, are the tiny things. A butterfly flaps its wings in the Amazonian jungle, and subsequently a storm ravages half of Europe.

As we age, we become our parents; live long enough and we see faces repeat in time.