And this puts me in mind of that rich gentleman of Rome,--[Calvisius Sabinus. Seneca, Ep., 27.]--who had been solicitous, with very great expense, to procure men that were excellent in all sorts of science, whom he had always attending his person, to the end, that when amongst his friends any occasion fell out of speaking of any subject whatsoever, they might supply his place, and be ready to prompt him, one with a sentence of Seneca, another with a verse of Homer, and so forth, every one according to his talent; and he fancied this knowledge to be his own, because it was in the heads of those who lived upon his bounty; as they also do, whose learning consists in having noble libraries. I know one, who, when I question him what he knows, he presently calls for a book to shew me, and dares not venture to tell me so much, as that he has piles in his posteriors, till first he has consulted his dictionary, what piles and what posteriors are.