When the world is destroyed, it will be destroyed not by its madmen but by the sanity of its experts and the superior ignorance of its bureaucrats.

A dead man is the worst enemy alive, I thought. You can't alter his power over you. You can't alter what you love or owe. And it's too late to ask him for his absolution. He has beaten you all ways.

He has the gift of quiet.

The one thing you can bet is that spying is never over. Spying is like the wiring in this building: It's just a question of who takes it over and switches on the lights. It will go on and on and on.

A good man knows when to sacrifice himself, a bad man survives but loses his soul.

The good pupils are often brilliant, and they keep you on your toes and take you to the limits of your knowledge. The worst pupils provide a unique insight into the criminal mind.

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.