Before the invention of the art of printing, the only employment by which a man of letters could make anything by his talents, was that of a public or private teacher, or by communicating to other people the curious and useful knowledge which he had acquired himself; and this is still surely a more honorable, a more useful, and in general even a more profitable employment than that other of writing for a bookseller, to which the art of printing has given occasion. The time and study, the genius, knowledge, and application requisite to qualify an eminent teacher of the sciences, are at least equal to what is necessary for the greatest practitioners in law and physic. Bat the usual reward of the eminent teacher bears no proportion to that of the lawyer or physician; because the trade of the one is crowded with indigent people who have been brought up to it at the public expense; whereas those of the other two are encumbered with very few who have not been educated at their own. The usual recompense, however, of public and private teachers, small as it may appear, would undoubtedly be less than it is, if the competition of those yet more indigent men of letters who write for bread was not taken out of the market. Before the invention of the art of printing, a scholar and a beggar seem to have been terms very nearly synonymous. The different governors of the universities before that time appear to have often granted licenses to their scholars to beg.
In ancient times, before any charities of this kind had been established for the education of indigent people to the learned professions, the rewards of eminent teachers appear to have been much more considerable. Isocrates, in what is called his discourse against the Sophists, reproaches the teachers of his own times with inconsistency.
