I lent my copy of Barbara Hepworth’s A Pictorial Autobiography to an illustrator friend who, for reasons of distance and diaries, I rarely see. We had been talking about children and creativity and whether one must necessarily restrict the other: the easel, the laptop, the pram in the hall. I said she must read Hepworth and posted her my copy. It arrived. She thanked me. After that: nothing. Nothing for months and months and a year, and for months after that. I nursed a perverse and very British grievance. I couldn’t possibly ask for it back, because that would be rude. Instead, I did the proper and polite thing of raining resentment, curses and hellfire on her head every time my eye caught the gap in the bookcase.