The Wealth of Nations by Part 5 Chapter 1 Page 109

In France, however, the great post-roads, the roads which make the communication between the principal towns of the kingdom, are in general kept in good order, and in some provinces are even a good deal superior to the greater part of the turnpike roads of England. But what we call the cross-roads, that is, the far greater part of the roads in the country, are entirely neglected, and are in many places absolutely impassable for any heavy carriage. In some places it is even dangerous to travel on horseback, and mules are the only conveyances which can safely be trusted. The proud minister of an ostentatious court may frequently take pleasure in executing a work of splendour and magnificence, such as a great highway, which is frequently seen by the principal nobility, whose applauses not only flatter his vanity, but even contribute to support his interest at court.