John Scalzi said this quote

I think back to the day I stood before my wife's grave for the final time, and turned away from it without regret, because I knew that what she was was not contained in that hole in the ground. I entered a new life and found her again, in a woman who was entirely her own person. When this life is done, I'll turn away from it without regret as well, because I know she waits for me, in another, different life.