“They are upon that the greatest of all improvements.”
Adam Smith (1723–1790) Scottish moral philosopher and political economist
Source: The Wealth of Nations (1776), Book I, Chapter XI, Part I, p. 174.
Context: Good roads, canals, and navigable rivers, by diminishing the expence of carriage, put the remote parts of the country more nearly upon a level with those of the neighbourhood of the town. They are upon that the greatest of all improvements.