In a colophon it will naturally be expected that among the sentiments more frequently finding expression, should be the printer's joy in his art, and assertion of its claims to admiration. Udalricus Gallus, of Rome, boasts that he can print more matter in a day than a copyist can transcribe in a year: "Imprimit ille die quantum non scribitur anno." The same printer tells the geese that saved the Capitol that they may keep their quills for the future, as the cock (_Gallus_) has cut them out. Joannes de Spira, the first printer established at Venice, declares that his first attempt has so far surpassed the work of the scribes that the reader need set no bounds to his anticipations; just as an electric light company might advertise "Gas entirely superseded." He celebrates his type as more legible than manuscript: "Namque vir ingenio mirandus et arte Joannes Exscribi docuit clarius ære libros." Now the word _docuit_ (_taught_) is not really appropriate to one who merely exercised an art he had learned from others. The question might be raised whether the reference is not to the inventor of printing, Joannes Gutenberg, and whether in this book of 1469 we have not the earliest testimony to his invention of printing. If so, this is indeed a precious colophon; but I suppose it must be admitted to be more likely that Spira was thinking of himself, or that his poet was not over-discriminating in his praise of his employer. The point, however, is worth considering. Spira's brother, Vindelinus, enunciates the excellent maxim that the renown of a printer is rather to be estimated by the beauty than by the number of his productions: "Nec vero tantum quia multa volumina, quantum Qui perpulchra simul optimaque exhibeat." Nothing, indeed, is more characteristic of the early printers than the stress they laid upon accuracy. From another colophon we learn that an edition of Sallust at that early period consisted of five hundred copies. In another the same printer declares that he will deign to sell nothing that is not perfectly correct. In another he talks of having carefully expurgated his author, as if he had been printing Juvenal or Martial, but as the author is a divine the remark can only refer to the correctness of the text. John of Cologne goes further still, and asserts that his book is absolutely immaculate: "Emptor, habes careant omni qui crimine libri, Quos securus emas, procul et quibus exulat error."