The Wealth of Nations by Part 5 Chapter 1 Page 251

instruction produced what it always produces- the talent for giving it; and the emulation which an unrestrained competition never fails to excite, appears to have brought that talent to a very high degree of perfection. In the attention which the ancient philosophers excited, in the empire which they acquired over the opinions and principles of their auditors, in the faculty which they possessed of giving a certain tone and character to the conduct and conversation of those auditors, they appear to have been much superior to any modern teachers.

In modern times, the diligence of public teachers is more or less corrupted by the circumstances which render them more or less independent of their success and reputation in their particular professions. Their salaries, too, put the private teacher, who would pretend to come into