And in the first place as to the opening and closing of books, let there be due moderation, that they be not unclasped in precipitate haste, nor when we have finished our inspection be put away without being duly closed. For it behoves us to guard a book much more carefully than a boot.
But the race of scholars is commonly badly brought up, and unless they are bridled in by the rules of their elders they indulge in infinite puerilities. They behave with petulance, and are puffed up with presumption, judging of everything as if they were certain, though they are altogether inexperienced.
You may happen to see some headstrong youth lazily lounging over his studies, and when the winter's frost is sharp, his nose running from the nipping cold drips down, nor does he think of wiping it with his pocket-handkerchief until he has bedewed the book before him with the ugly moisture. Would that he had before him no book, but a cobbler's apron! His nails are stuffed with fetid filth as black as jet, with which he marks any passage that pleases him. He distributes a multitude of straws, which he inserts to stick out in different places, so that the halm may remind him of what his memory cannot retain. These straws, because the book has no stomach to digest
