To enhance the advantages which we derive from that art, the number and diffusion of manuscripts have been too much underrated. It is true that they were scarce in the epoch immediately preceding; but in the latter periods of the Roman empire they were much more numerous and much more widely diffused than is generally imagined. In those times, the facilities for instruction were by no means of difficult access; books, indeed, were quite common. We may judge so from the extraordinary number of threadbare grammarians with which even the smallest villages swarmed; a sort of people very much like the petty novelists, lawyers, and editors of modern times, and whose loose morals, shabbiness, and passionate love for enjoyments, are described in Pretronius's Satyricon. Even when the decadence was complete, those who wished for books could easily procure them. Virgil was read everywhere; so much so, that the illiterate peasantry, hearing so much of him, imagined him to be some dangerous and powerful sorcerer. The monks copied him; they copied Pliny, Dioscorides, Plato, and Aristotle; they copied Catullus and Martial. These books, then, cannot have been very rare. Again, when we consider how great a number has come down to us notwithstanding centuries of war and devastation--notwithstanding so many conflagrations of monasteries, castles, libraries, &c.--we cannot but admit that, in spite of the laborious process of transcription, literary productions must have been multiplied to a very great extent. It is possible, therefore, to greatly exaggerate the obligations under which science, poetry, morality, and true civilization lie to the typographic art; and I repeat it, that art is a marvellous instrument, but if the arm that wields it, and the head that directs the arm, are not, the instrument cannot be, of much service. Some people believe that the possession of gunpowder exempts modern societies from many of the dangers that proved fatal to the ancient. They assert that it abates the horrors of warfare, and diminishes its frequency, bidding fair, therefore, to establish, in time, a state of universal peace. If such be the beneficial results attendant on this accidental invention, they have not as yet manifested themselves.