The value of any commodity, therefore, to the person who possesses it, and who means not to use or consume it himself, but to exchange it for other commodities, is equal to the quantity of labour which it enables him to purchase or command. Labour, therefore, is the real measure of the exchangeable value of all commodities. The real price of everything, what everything really costs to the man who wants to acquire it, is the toil and trouble of acquiring it.
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 SmithThe mob, when they are gazing at a dancer on the slack rope, naturally writhe and twist and balance their own bodies, as they see him do.
Adam SmithA nation is not made wealthy by the childish accumulation of shiny metals, but it enriched by the economic prosperity of it's people.
Adam Smith