The Wealth of Nations by Part 1 Chapter 11 Page 31

kitchen garden, which thus enjoys the benefit of an enclosure which its own produce could seldom pay for.

That the vineyard, when properly planted and brought to perfection, was the most valuable part of the farm, seems to have been an undoubted maxim in the ancient agriculture, as it is in the modern through all the wine countries. But whether it was advantageous to plant a new vineyard was a matter of dispute among the ancient Italian husbandmen, as we learn from Columella. He decides, like a true lover of all curious cultivation, in favour of the vineyard, and endeavours to show, by a comparison of the profit and expense, that it was a most advantageous improvement. Such comparisons, however, between the profit and expense of new projects are commonly very fallacious, and in nothing more so than in agriculture.