[Margaret Thatcher] was always talking about what the prudent housewife should do and what the prudent housewife knew.

When you have committed enough words to paper, you feel you have a spine stiff enough to stand up in the wind. But when you stop writing, you find that's all you are - a spine, a row of rattling vertebrae, dried out like an old quill pen.

It is almost a joke, but a joke that nobody tells.

Florence and Milan had given him ideas more flexible than those of people who'd stayed at home.

The fate of peoples is made like this, two men in small rooms. Forget the coronations, the conclaves of cardinals, the pomp and processions. This is how the world changes: a counter pushed across a table, a pen stroke that alters the force of a phrase, a woman's sigh as she passes and leaves on the air a trail of orange flower or rose water; her hand pulling close the bed curtain, the discreet sigh of flesh against flesh.

Like every writer, I'm drawn by unlikely juxtapositions, precisely-dated and once-only collisions between people from different worlds.

If you get stuck, get away from your desk. Take a walk, take a bath, go to sleep, make a pie, draw, listen to music, meditate, exercise; whatever you do, don't just stick there scowling at the problem. But don't make telephone calls or go to a party; if you do, other people's words will pour in where your lost words should be.