There's a name for people with an interest in the moon," Alex said. "They're called lunatics.

When are you at your most defenseless?

We have no money. We have no possessions. Maybe that is why we value the things we do have ... loyalty and friendship.

My greatest fear is disappointing the reader, so each book has to be better than the one before.

You couldn't trust anyone or anything that belonged to the world of espionage.

What were you going to do with it?” McCain asked. "I just thought it might come in useful.” "Were you planning to attack me?” "No. But that’s a good idea.

Whatever you say, old boy. Just look after yourself. And whatever you do, don't swallow the gum!