“For each individual it is a great advantage to retain the rights over the fruits of his labour even though he must put off the enjoyment of them. His personal wealth is thus increased. For that is what wealth is,—command of the right to postponed consumption.”

Barcelona and Beyond: How Politicians & Policy Wonks Play God With Your Life http://dailycaller.com/2017/08/21/barcelona-and-beyond-how-politicians-wonks-play-god/, Daily Caller, August 21, 2017.
Barcelona and Beyond: How Politicians & Policy Wonks Play God With Your Life http://www.americanthinker.com/blog/2017/08/barcelona_and_beyond_how_politicians_and_policy_wonks_play_god_with_your_life_.html,  American Thinker, August 20, 2017.
2010s, 2017

Notebook VII, The Chapter on Capital, pp. 628–629.
Grundrisse (1857/58)
Context: The development of fixed capital indicates in still another respect the degree of development of wealth generally, or of capital…
The creation of a large quantity of disposable time apart from necessary labour time for society generally and each of its members (i. e. room for the development of the individuals’ full productive forces, hence those of society also), this creation of not-labour time appears in the stage of capital, as of all earlier ones, as not-labour time, free time, for a few. What capital adds is that it increases the surplus labour time of the mass by all the means of art and science, because its wealth consists directly in the appropriation of surplus labour time; since value directly its purpose, not use value. It is thus, despite itself, instrumental in creating the means of social disposable time, in order to reduce labour time for the whole society to a diminishing minimum, and thus to free everyone’s time for their own development. But its tendency always, on the one side, to create disposable time, on the other, to convert it into surplus labour...
The mass of workers must themselves appropriate their own surplus labour. Once they have done so – and disposable time thereby ceases to have an antithetical existence – then, on one side, necessary labour time will be measured by the needs of the social individual, and, on the other, the development of the power of social production will grow so rapidly that, even though production is now calculated for the wealth of all, disposable time will grow for all. For real wealth is the developed productive power of all individuals. The measure of wealth is then not any longer, in any way, labour time, but rather disposable time. Labour time as the measure of value posits wealth itself as founded on poverty, and disposable time as existing in and because of the antithesis to surplus labour time; or, the positing of an individual’s entire time as labour time, and his degradation therefore to mere worker, subsumption under labour. The most developed machinery thus forces the worker to work longer than the savage does, or than he himself did with the simplest, crudest tools.

Grundrisse (1857-1858)
Source: Notebook VII, The Chapter on Capital, pp. 628–629.

Whether an Aged Man ought to meddle in State Affairs
Bartlett's Familiar Quotations, 10th ed. (1919)

1850s, Speech at Chicago (1858)
Context: I believe each individual is naturally entitled to do as he pleases with himself and the fruit of his labor, so far as it in no wise interferes with any other man's rights, that each community, as a State, has a right to do exactly as it pleases with all the concerns within that State that interfere with the right of no other State, and that the general government, upon principle, has no right to interfere with anything other than that general class of things that does concern the whole.

Source: (1776), Book I, Chapter VIII, p. 97.

On the Silver Mark (1791)

As quoted in The Class Book of American Literature (1826) edited by John Frost, Lesson XLIX : Specimen of the Eloquence of James Otis i extracted from "The Rebels."
Context: England may as well dam up the waters of the Nile, with bulrushes, as to fetter the step of freedom, more proud and firm in this youthful land, than where she treads the sequestered glens of Scotland, or couches herself among the magnificent mountains of Switzerland. Arbitrary principles, like those, against which we now contend, have cost one king of England his life, another, his crown — and they may yet cost a third his most flourishing colonies.
We are two millions — one fifth fighting men. We are bold and vigorous, — and we call no man master. To the nation, from whom we are proud to derive our origin, we ever were, and we ever will be, ready to yield unforced assistance; but it must not, and it never can be extorted.
Some have sneeringly asked, "Are the Americans too poor to pay a few pounds on stamped paper? No! America, thanks to God and herself, is rich. But the right to take ten pounds, implies the right to take a thousand; and what must be the wealth, that avarice, aided by power, cannot exhaust? True the spectre is now small; but the shadow he casts before him, is huge enough to darken all this fair land.

Leon MacLaren, Nature of Society and Other Essays