Heinsius — Daniel Heinsius (1580-1655), a Dutch scholar. In Anatomy of Melancholy, Robert Burton says: “Heinsius, the keeper of the library at Leyden in Holland, was mewed up in it all year long; and that to which thy thinking should have bred a loathing, caused in him a greater liking. ‘No sooner’ (saith he) ‘come into the library, but I bolt the door to me, excluding lust, ambition, avarice, and all such vices, whose nurse is idleness, the mother of ignorance, and melancholy herself, and in the very lap of eternity, amongst so many divine souls, I take my seat, with so lofty a spirit and sweet content that I pity all our great ones that know not this happiness.’”