The annual produce of the land and labour of any nation can be increased in its value by no other means, but by increasing either the number of its productive labourers, or the productive powers of those labourers who had before been employed.
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Chapter III, p. 377Adam Smith
Labour, upon whichever of those operations it be bestowed, is productive, because it concurs in the creation of a product. Thus the labour of the philosopher, whether experimental or literary, is productive; the labour of the adventurer or master-manufacturer is productive, although he perform no actual manual work; the labour of every operative workman is productive, from the common day-labourer in agriculture, to the pilot that governs the motion of a ship.
Jean-Baptiste Say
From these causes united, the mere separation of the occupation of the cultivator, from that of the Artificer, has the effect of augmenting the productive powers of labour, and with them, the total mass of the produce or revenue of a Country. In this single view of the subject, therefore, the utility of Artificers or Manufacturers, towards promoting an increase of productive industry, is apparent.
Alexander Hamilton
The produce of the earth - all that is derived from its surface by the united application of labour, machinery, and capital, is divided among three classes of the community, namely, the proprietor of the land, the owner of the stock or capital necessary for its cultivation, and the labourers by whose industry it is cultivated.
David Ricardo
"a class of labourers, who live only so long as they find work, and who find work only so long as their labour increase capital. These labourers, who must sell themselves piecemeal, are a commodity, like every other article of commerce, and are consequently exposed to all the vicissitudes of competition, to all the fluctuations of the market."
Karl Marx
The greatest improvement in the productive powers of labour, and the greatest part of skill, dexterity, and judgment with which it is any where directed, or applied, seem to have been the effects of the division of labour.
Adam Smith
Smith, Adam
Smith, Alexander
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