Agents of disruption, subversion, sabotage and disinformation tunnelers and smugglers, listeners and forgers, trainers and recruiters and talent spotters and couriers and watchers and seducers, assassins and balloonists, lip readers and disguise artists.

I think that most of my books are part of some process of self-education, often about the places I go to. Most of all, they are about the peculiar tension between institutional loyalty and loyalty to oneself; the mystery of patriotism, for a Brit of my age and generation, where it runs, how it should be defined, what it's worth and what a corrupting force it can be when misapplied. All that stuff is just in me and it comes out in the characters. I don't mean to preach, but I know I do, and I'm a very flawed person. It's quite ridiculous.

There are moments which are made up of too much stuff for them to be lived at the time they occur.

The longing we have to communicate cleanly and directly with people is always obstructed by qualifications and often with concern about how our messages will be received.

I think that where I've watched a movie go wrong, it's usually because the dread committee has been interfering with it.

Having your book turned into a movie is like seeing your oxen turned into bouillon cubes.

Look... we're getting to be old men, and we've spent our lives looking for the weaknesses in one another's systems. I can see through Eastern values just as you can see through our Western ones. Both of us, I am sure, have experienced ad nauseam the technical satisfactions of this wretched war. But now your own side is going to shoot you. Don't you think it's time to recognise that there is as little worth on your side as there is on mine?