"There is something fascinating about what moral suffering can do to someone who is in no obvious way a weak or feeble person. It's more insidious even than what physical illness can do, because there is no morphine drip or spinal block or radical surgery to alleviate it. Once you're in its grip, it's as though it will have to kill you for you to be free of it. It's raw realism is like nothing else."

Philip Roth. Human Stain