I think it’s very different in what I do. Edison’s work was so much tinkering and trying it out and empirical testing. So much of my work is writing. I don’t know what you call the writing, it’s true that the actual inspiration, say for writing an essay, the outlining of it is probably a 15-minute to half-hour procedure, then you may spend about 20 hours writing it. But the writing isn’t perspiration in the same sense. It’s not inspiration, but it’s something in between. Any profession has a vast amount of tedium attached to it. There’s no sense not admitting it. If you’re passionate about it, tedium can be — not exactly a joy — but can be perfectly tolerable. The tedium of a pianist is 10 hours of practice a day or whatever, not all of which is inspirational. The tedium of an experimental scientist is calibrating the machines and doing it over and over again. The tedium of a paleontologist is poring over a microscope, or using a dental pick to chip away the sand grains from the fossil, or looking at the statistical figures in the columns of a computer printout. Every profession has massive tedium, that’s certainly true. You cannot be a successful professional (without it). But I think if you’re committed to it, as they say, it goes with the territory. It’s part of the work.

It's not focus, it's an intensity of desire.

A writer is no different than a bricklayer or a bus driver in that sense. You must have discipline. Oscar Wilde said that writing is 10 percent genius, 90 percent discipline. You must have discipline for writing. It is not an easy task. It is very lonely. You’re all alone. You are not in company. You are not enjoying yourself in that sense. You are enjoying yourself in another sense. You are delving into your depths, but you are profoundly lonely. It is one of the loneliest careers in the world. In the theater, you are with companions, with directors, actors. In film. In an office. In writing, you are alone. That takes a lot of strength and a lot of will to do it. You must really be in love with what you’re doing to tolerate the huge loneliness of writing.

Do I have a muse? Well, I don’t know if this is an adequate answer, but I suppose my muse is the people of South Africa. I’ve often said that the little — or maybe the lot — I know about loving and hating was taught me by South Africa. Now that’s a big debt. When you owe that much to a situation that has shaped your conscience, your heart, your whole life, you’re profoundly indebted.