It's very difficult to explain what I do. It is much more instinctive than you realize; much, much more. ... the reasons that make me interested in a subject are, how shall I say, fickle. Many times I have chosen, among three stories, one for reasons that are entirely accidental: I get up and think this one will be stupendous because the night before I had a certain dream. Or perhaps I put it better by saying that I had found inside myself reasons why this particular story seems more valid. ... I always have motives, but I forget them.