Caroline Leavitt said this quote

He tried to be a good man, to do the right things, to make the world a little better than it had been before he had put his stamp upon it. You could be generous with the love you gave, with the care you took with others. You could follow all the command- ments that made sense to you and still the world could sideswipe you. There was no cause and effect. There was no karma. The truth was that he wasn't so sure he understood how the world worked anymore.