Who can know anybody?' said the bookshop owner. 'Every person is like thousands of books. New, reprinting, in stock, out of stock, fiction, non-fiction, poetry, rubbish. The lot. Different every day. One's lucky to be able to put his hand on the one that's wanted, let alone know it.
Russell Hoban, The Lion of Boaz-Jachin and Jachin-Boaz
books, knowledge-of-people