In itself, the practice of deception is not particularly exacting; it is a matter of experience, of professional expertise, it is a facility most of us can acquire.

The Spy Who Came in from the Cold was the work of a wayward imagination brought to the end of its tether by political disgust and personal confusion. Fifty years on, I don't associate the book with anything that ever happened to me, save for one wordless encounter at London airport when a worn-out, middle-aged military kind of man in a stained raincoat slammed a handful of mixed foreign change on to the bar and in gritty Irish accents ordered himself as much Scotch as it would buy. In that moment, Alec Leamas was born. Or so my memory, not always a reliable informant, tells me.

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?

Never trade a secret, you'll always get the short end of the bargain.

The monsters of our childhood do not fade away, neither are they ever wholly monstrous. But neither, in my experience, do we ever reach a plane of detachment regarding our parents, however wise and old we may become. To pretend otherwise is to cheat.

George Smiley: [quoting an old letter from Bill Haydon about Jim Prideaux] He has that heavy quiet that commands. He's my other half. Between us we'd make one marvelous man. He asks nothing better than to be in my company or that of my wicked, divine friends, and I'm vastly tickled by the compliment. He's virgin, about eight foot tall, and built by the same firm that did Stonehenge

Every writer knows he is spurious; every fiction writer would rather be credible than authentic.