The Wealth of Nations by Part 5 Chapter 2 Page 12

principal funds of that sure, steady, and permanent revenue which can alone give security and dignity to government. The government of no great nation that was advanced beyond the shepherd state seems ever to have derived the greater part of its public revenue from such sources.

Land is a fund of a more stable and permanent nature; and the rent of public lands, accordingly, has been the principal source of the public revenue of many a great nation that was much advanced beyond the shepherd state. From the produce or rent of the public lands, the ancient republics of Greece and Italy derived, for a long time, the greater part of that revenue which defrayed the necessary expenses of the commonwealth.

The rent of the crown lands constituted for a long time the greater part of the revenue of the ancient sovereigns of Europe.