Consumption is the sole end and purpose of all production.

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.

Man is an animal that makes bargains: no other animal does this - no dog exchanges bones with another.

Every individual necessarily labors to render the annual revenue of society as great as he can. He generally neither intends to promote the public interest, nor knows how much he is promoting it. He intends only his own gain, and he is, in this, as in many other cases, led by an invisible hand to promote an end which was not part of his intention.

What can be added to the happiness of the man who is in health, who is out of debt, and has a clear conscience?

When profit diminishes, merchants are very apt to complain that trade decays; though the diminution of profit is the natural effect of its prosperity, or of a greater stock being employed in it than before.

Capitals are increased by parsimony, and diminished by prodigalityand misconduct. By what a frugal man annually saves he not onlyaffords maintenance to an additional number of productive hands?but?he establishes as it were a perpetual fund for the maintenance of an equal number in all times to come.