“The labour of a menial servant, on the contrary, adds to the value of nothing.”
Source: The Wealth of Nations (1776), Book II, Chapter III, p. 364 (see Proverbs 14-23 KJV).
Context: Thus the labour of a manufacture adds, generally, to the value of the materials which he works upon, that of his own maintenance, and of his masters profits. The labour of a menial servant, on the contrary, adds to the value of nothing.
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Adam Smith 175
Scottish moral philosopher and political economist 1723–1790Related quotes

Grundrisse (1857-1858)
Source: Notebook IV, The Chapter on Capital, p. 308.

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“The circulation of capital realizes value, while living labour creates value.”
(1857/58)
Source: Notebook V, The Chapter on Capital, p. 463.

The King v. Inhabitants of St. Paul's, Bedford (1797), 6 T. R. 454.

Grundrisse (1857-1858)
Source: Notebook III, The Chapter on Capital, p. 259.

“Because the earth is not a product of labour it cannot have a value.”
Source: The Limits To Capital (2006 VERSO Edition), Chapter 11, Theory Of Rent, p. 347

“Labour, therefore, is the real measure of the exchangeable value of all commodities”
Source: The Wealth of Nations (1776), Book I, Chapter V.
Context: Every man is rich or poor according to the degree in which he can afford to enjoy the necessaries, conveniences, and amusements of human life. But after the division of labour has once thoroughly taken place, it is but a very small part of these with which a man's own labour can supply him. The far greater part of them he must derive from the labour of other people, and he must be rich or poor according to the quantity of that labour which he can command, or which he can afford to purchase. 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 purpose of our lives is to add value to the people of this generation and those that follow.”
Source: Secrets of the Millionaire Mind: Mastering the Inner Game of Wealth