I was in my favourite little second-hand bookshop in Oxford when I saw in the science section my first published volume. I was curious to see if it had belonged to someone I knew. There was no name but loads of marginalia. Spidery writing which I recognised belonged to an early pupil of mine, now a don of renown at Cambridge. He had been a favourite pupil - so attentive.
Well! His marginalia was rude about my syntax, my grammar as well as my science. I felt cut to the quick.