When I first got back from the war, I said, 'I'm gonna write the Great American Novel about the Vietnam War.' So I sat down and wrote 1,700 pages of sheer psychotherapy drivel. It was first person, and there would be pages about wet socks and cold feet.

We mistakenly assume that bodily survival has a higher precedence than ego survival. This is simply not generally true. Ego will happily destroy the body for its own sake. Look at overweight executives headed for heart attacks on the way to getting their pictures in Fortune or anorexic models suffering slow starvation on their way to getting their pictures in Vogue. Protecting ego is the general case.

We all want to be special, to stand out; there's nothing wrong with this. The irony is that every human being is special to start with, because we're unique to start with. But we then go through some sort of boot camp from the age of zero to about 18 where we learn everything we can about how not to be unique.

Vietnam was the first time that Americans of different races had to depend on each other. In the Second World War, they were segregated; it was in Vietnam that American integration happened in the military - and it wasn't easy.

He thought of the jungle, already regrowing around him to cover the scars they had created. He thought of the tiger, killing to eat. Was that evil? And ants? They killed. No, the jungle wasn’t evil. It was indifferent. So, too, was the world. Evil, then, must be the negation of something man had added to the world. Ultimately, it was caring about something that made the world liable to evil. Caring. And then the caring gets torn asunder. Everybody dies, but not everybody cares.

I mean... if you're raised as a decent human being, killing somebody is against every moral thing you've ever been taught. And so, generally, in combat it's 'krauts,' the 'gooks,' the 'yanks' - whatever you want to do to try and make it so that it's not a human being.

For every veteran who goes through a divorce, a wife goes through one, too. For every veteran alone in the basement, there is a wife upstairs, bewildered, isolated and in despair from the dark clouds of war that hangs over family life.