The Wealth of Nations by Part 5 Chapter 2 Page 51

landlord is a particular and minute consideration of what is likely to be the most advantageous application of every inch of ground upon his estate. The principal attention of the sovereign ought to be to encourage, by every means in his power, the attention both of the landlord and of the farmer, by allowing both to pursue their own interest in their own way and according to their own judgment; by giving to both the most perfect security that they shall enjoy the full recompense of their own industry; and by procuring to both the most extensive market for every part of their produce, in consequence of establishing the easiest and safest communications both by land and by water through every part of his own dominions as well as the most unbounded freedom of exportation to the dominions of all other princes.