““What did you write on the back of the postcard?” “It was going to be a surprise.” “I’m too old for surprises. Besides, surprises always come with a sharp edge that is meant to hurt. I don’t want to be hurt—not by you. Tell me.” “Just two words.” “Let me guess: If not later, when? ” “Two words, I said. Besides, that would be cruel.” I thought for a while. “I give up.” “ Cor cordium , heart of hearts, I’ve never said anything truer in my life to anyone.””