"A friend of my family was an experienced doctor and an extraordinary piano player. One day the Nazis came to arrest him. He did not know why. They told him it was because he was Jewish. He claimed he had always been a Christian. But they said he had been adopted as a baby, and that his mother would have been Jewish.
"He had never had the slightest idea of that. No one had ever told him. The next day he was dead. He had hung himself. The shock had been too much for him. And they had done their job without sullying their hands with blood."