“The directing motive, the end and aim of capitalist production, is to extract the greatest possible amount of surplus value, and consequently to exploit labor-power to the greatest possible extent.”

as quoted by de:Wolf-Dieter Dube, in Expressionism, de:Wolf-Dieter Dube; Praeger Publishers, New York, 1973, p. 90

Source: The Limits To Capital (2006 VERSO Edition), Chapter 13, Crisis In The Space Economy Of Capitalism, p. 424

Exploitation of Labor (1967)

Source: The Conquest of Bread (1892), Ch. 8 : Ways and Means

Source: (1776), Book I, Chapter I, p. 7

The Caesars (c. 361)
Context: Hermes addressed Marcus and said, "and you, Verus, what did you think the noblest ambition in life?" In a low voice he answered modestly, "To imitate the gods." This answer they at once agreed was highly noble and in fact the best possible. And even Hermes did not wish to cross-examine him further, since he was convinced that Marcus would answer every question equally well.
The other gods were of the same mind; only Silenus cried "By Dionysus I shall not let this sophist off so easily. Why then did you eat bread and drink wine and not ambrosia and nectar like us?" "Nay," he replied "it was not in the fashion of my meat and drink that I thought to imitate the gods. But I nourished my body because I believed, though perhaps falsely, that even your bodies require to be nourished by the fumes of sacrifice. Not that I supposed I ought to imitate you in that respect, but rather your minds."
For the moment Silenus was at a loss as though he had been hit by a good boxer, then he said: "There is perhaps something in what you say; but now tell me what did you think was really meant by 'imitating the gods.'"
"Having the fewest possible needs, and doing good to the greatest possible number."

Exploitation of Labor (1967)

"Manifesto for the Abolition of Enslavement to Interest on Money" (1919)

Government (1820)
Context: Of the laws of nature on which the condition of man depends, that which is attended with the greatest number of consequences is the necessity of labor for obtaining the means of subsistence, as well as the means of the greatest part of our pleasures. This is no doubt the primary cause of government; for if nature had produced spontaneously all the objects which we desire, and in sufficient abundance for the desires of all, there would have been no source of dispute or of injury among men, nor would any man have possessed the means of ever acquiring authority over another.
The results are exceedingly different when nature produces the objects of desire not in sufficient abundance for all. The source of dispute is then exhaustless, and every man has the means of acquiring authority over others in proportion to the quantity of those objects which he is able to possess. In this case the end to be obtained through government as the means, is to make that distribution of the scanty materials of happiness which would insure the greatest sum of it in the members of the community taken altogether, preventing every individual or combination of individuals from interfering with that distribution or making any man to have less than his share.