"Father said it used to be a gentleman was known by his books; nowadays he is known by the ones he hasn’t returned."

A reference to the Scottish author and reformer Samuel Smiles, who writes in Self-Help (1859), "A man may usually be known by the books he reads as well as by the company he keeps; for there is a companionship of books as well as of men; and one should always live in the best company, whether it be of books or men".