He had rebuilt a bathroom doorway himself, badly.

He had, over five years, done an enormous amount of competent, loving, physical work on that house for his daughter.

And he had not read a letter.

That is the whole of Nathan Lin and it took me a year and a half to see it and he said it to me himself in the February, in a diner, at eight in the morning, with a coffee in front of him that he did not drink.

He said: “Sarah, I can build a ramp in a weekend.