The great Latinist D.R. Shackleton Bailey was once said to have been pinned into a corner at a party and ordered to reveal what he actually did. ‘I just look things up all day,’ came the tetchy reply.

That will ring a loud bell with those who learned ancient Greek or Latin at school, especially when it came to looking up the meaning of a word in LSJ, Oxford’s big Greek-English dictionary, or rather lexicon (Greek lexikos, ‘of or for words’).