The Wealth of Nations by Part 5 Chapter 1 Page 263

the attention of the public more than that of people of some rank and fortune. People of some rank and fortune are generally eighteen or nineteen years of age before they enter upon that particular business, profession, or trade, by which they propose to distinguish themselves in the world. They have before that full time to acquire, or at least to fit themselves for afterwards acquiring, every accomplishment which can recommend them to the public esteem, or render them worthy of it. Their parents or guardians are generally sufficiently anxious that they should be so accomplished, and are, in most cases, willing enough to lay out the expense which is necessary for that purpose.

If they are not always properly educated, it is seldom from the want of expense laid out upon their education, but from the improper application