The natural price, therefore, is, as it were, the central price, to which the prices of all commodities are continually gravitating.
Adam SmithWhat is prudence in the conduct of every private family can scarce be folly in that of a great kingdom.
Adam SmithMan is an animal that makes bargains: no other animal does this - no dog exchanges bones with another.
Adam SmithThe importation of gold and silver is not the principal, much less the sole benefit which a nation derives from its foreign trade.
Adam Smith