Such lands at last cannot repay the expence of conquest, and therefore perhaps have not been so often invaded by the mere ambition of dominion; as by resentment of robberies and insults, or the desire of enjoying in security the more fruitful provinces.
As mountains are long before they are conquered, they are likewise long before they are civilized. Men are softened by intercourse mutually profitable, and instructed by comparing their own notions with those of others. Thus Cæsar found the maritime parts of Britain made less barbarous by their commerce with the Gauls. Into a barren and rough tract no stranger is brought either by the hope of gain or of pleasure. The inhabitants having neither commodities for sale, nor money for purchase, seldom visit more polished places, or if they do visit them, seldom return.
It
