His punishment was his life.

He was living it right now, on his empty terrace in Palm Beach, and no revenge I could devise would be crueler than the plain consequence of the man he had chosen to be.

He had wanted a life free of the inconvenience of love, and he had gotten precisely that, and now he had to live inside the freedom he had bought.

There is nothing I could do to him that would be worse than leaving him exactly where he was.