The Wealth of Nations_ Books 4-5 - Adam Smith [69]
But the very same circumstances which would have rendered an open and free commerce between the two countries so advantageous to both, have occasioned the principal obstructions to that commerce. Being neighbours, they are necessarily enemies, and the wealth and power of each becomes, upon that account, more formidable to the other; and what would increase the advantage of national friendship serves only to inflame the violence of national animosity. They are both rich and industrious nations; and the merchants and manufacturers of each dread the competition of the skill and activity of those of the other. Mercantile jealousy is excited, and both inflames, and is itself inflamed, by the violence of national animosity; and the traders of both countries have announced, with all the passionate confidence of interested falsehood, the certain ruin of each, in consequence of that unfavourable balance of trade, which, they pretend, would be the infallible effect of an unrestrained commerce with the other.
There is no commercial country in Europe of which the approaching ruin has not frequently been foretold by the pretended doctors of this system from an unfavourable balance of trade. After all the anxiety, however, which they have excited about this, after all the vain attempts of almost all trading nations to turn that balance in their own favour and against their neighbours, it does not appear that any one nation in Europe has been in any respect impoverished by this cause. Every town and country, on the contrary, in proportion as they have opened their ports to all nations, instead of being ruined by this free trade, as the principles of the commercial system would lead us to expect, have been enriched by it. Though there are in Europe, indeed, a few towns which in some respects deserve the name of free ports, there is no country which does so. Holland, perhaps, approaches the nearest to this character of any, though still very remote from it; and Holland, it is acknowledged, not only derives its whole wealth, but a great part of its necessary subsistence, from foreign trade.
There is another balance, indeed, which has already been explained, very different from the balance of trade, and which, according as it happens to be either favourable or unfavourable, necessarily occasions the prosperity or decay of every nation. This is the balance of the annual produce and consumption. If the exchangeable value of the annual produce, it has already been observed, exceeds that of the annual consumption, the capital of the society must annually increase in proportion to this excess. The society in this case lives within its revenue, and what is annually saved out of its revenue is naturally added to its capital, and employed so as to increase still further the annual produce. If the exchangeable value of the annual produce, on the contrary, fall short of the annual consumption, the capital of the society must annually decay in proportion to this deficiency. The expense of the society in this case exceeds its revenue, and necessarily encroaches upon its capital. Its capital, therefore, must necessarily decay, and together with it the exchangeable value of the annual produce