We are Craiglockhart's success stories. Look at us. We don't remember, we don't feel, we don't think - at least beyond the confines of what's needed to do the job. By any proper civilized standard (but what does that mean now?) we are objects of horror. But our nerves are completely steady. And we are still alive.

Culturally, the First World War is the war that stands in for other wars.

We are Craiglockhart's success stories. Look at us. We don't remember, we don't feel, we don't think - at least beyond the confines of what's needed to do the job. By any proper civilized standard (but what does that mean now?) we are objects of horror. But our nerves are completely steady. And we are still alive.

Sometimes, in the trenches, you get the sense of something, ancient. One trench we held, it had skulls in the side, embedded, like mushrooms. It was actually easier to believe they were men from Marlborough's army, than to think they'd been alive a year ago. It was as if all the other wars had distilled themselves into this war, and that made it something you almost can't challenge. It's like a very deep voice, saying; 'Run along, little man, be glad you've survived

The way I see it, when you put the uniform on, in effect you sign a contract. And you don't back out of a contract merely because you've changed your mind. You can still speak up for your principles, you can still argue against the ones you're being made to fight for, but in the end you do the job.

It's the hardest thing in the world to go on being aware of someone else's pain.

Looking straight at the world is part of your duty as a writer.