I'm finding it increasingly difficult to simply walk down the street. In New York, I dashed in to buy a big pair of sunglasses to conceal myself, but the guy behind the counter shouted 'Hey! It's Dr. House.'

I would cling to unhappiness because it was a known, familiar state. When I was happier, it was because I knew I was on my way back to misery. I've never been convinced that happiness is the object of the game. I'm wary of happiness.

I am very, very aware at all times. I'm watching myself, I'm listening to myself, I'm judging myself, critiquing myself all the time, and I will know when I do something and I will immediately say, "Can I do another one, because I didn't quite get that thing," or that I wanted to do something there and it didn't quite work.

One thing House needs Wilson for is vanity. He needs someone to laugh at his jokes.

You hope that your teenage self would like and forgive your 50-year-old self.

[...] and as I walked, I tried to see the funny side. It wasn't easy, and I'm still not sure that I managed it properly, but it's just something I like to do when things aren't going well. Because what does it mean, to say that things aren't going well? Compared to what? You can say: compared to how things were going a couple of hours ago, or a couple of years ago. But that's not the point. If two cars are speeding towards a brick wall with no brakes, and one car hits the wall moments before the other, you can't spend those moments saying that the second car is much better off than the first.

Newton's Third Law of Conversation, if it existed, would hold that every statement implies an equal and opposite statement. To say that I'd turned the offer down raised the possibility that I might not have done.