" This book started like this. My son, who is called Michael or Mike these days, but was Mikey back then, was angry at me. I'd said one of those things that parents say, like «isn't it time you were in bed», and he had looked up at me, furious, and said, «I wish I didn't have a dad! I wish I had...» and then stopped and thought, trying to think of what one could have instead of a father. Finally he said «I wish I had goldfish!» "