served. The undisclosed truth of the mind, although it is the possession of the noble soul, yet because it lacks a companion, is not certainly known to be delightful, while neither sight nor hearing takes account of it. Further the truth of the voice is patent only to the ear and eludes the sight, which reveals to us more of the qualities of things, and linked with the subtlest of motions begins and perishes as it were in a breath. But the written truth of books, not transient but permanent, plainly offers itself to be observed, and by means of the pervious spherules of the eyes, passing through the vestibule of perception and the courts of imagination, enters the chamber of intellect, taking its place in the couch of memory, where it engenders the eternal truth of the mind.
Finally we must consider what pleasantness of teaching there is in books, how easy, how secret! How safely we lay bare the poverty of human ignorance to books without feeling any shame! They are masters who instruct us without rod or ferule, without angry words, without clothes or money. If you come to them they are not asleep; if you ask and inquire of them they do not withdraw themselves; they do not chide if you make mistakes; they do not laugh at you if you are ignorant. O books, who alone
