Christopher asked about him every week for eighteen years.

The difference between those two facts is, in the end, the entire story.

I have wondered, over the years, why Mr.

Christopher was the way he was — why a man of his wealth and his position bothered to learn a housekeeper’s grandson’s name, when so many men in his place would not have learned the housekeeper’s.

And I think the answer is something he never said out loud but that I came to understand from a thousand small moments: that he had reached a stage of life where he had stopped confusing a person’s usefulness with a person’s worth.

Most people never make that separation.