The weight of the old world is stifling, and trying to shovel its weight off your life is tiring just to think about. The constant shuttling of opinions is tiring, and the shuffling of papers across desks, the chopping of logic and the trimming of attitudes. There must, somewhere, be a simpler, more violent world.

In terms of essays, I would say Oliver Sacks. His breadth of hard knowledge and imagination and empathy seems to constitute the perfect mind to me.

I used to think that when I set out that doing the research was enough! But then the gaps would emerge that could only be filled by the imagination. And imagination only comes when you privilege the subconscious, when you make delay and procrastination work for you.

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.

As Danton sees it, the most bizarre aspect of Camille's character is his desire to scribble over every blank surface; he sees a guileless piece of paper, virgin and harmless, and persecutes it till it is black with words, and then besmirches its sister, and so on, through the quire.

When I came to write my Thomas Cromwell books, I moved onto the center ground of English history, but I was never there before. I didn't feel it was my history particularly, coming from Northern Britain, being of Irish extraction, being a cradle Catholic. The image of England I grew up with felt somewhere else. There was an official England in postcards, but it wasn't one I had visited. But I decided to march onto the center ground and occupy it whether it was mine or not.

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.