“By capital we understand everything that, from the special use by the individual, or from its being placed at the disposal of others, produces a revenue or rent. We do not inquire into its origin, or ask whether it has been acquired by inheritance or by labour.”
Source: The Principles of Agriculture, 1844, Section I: The fundamental principles, p. 15.
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Albrecht Thaer 34
German agronomist and an avid supporter of the humus theory… 1752–1828Related quotes

Source: Imperialism, The Highest Stage of Capitalism (1917), Chapter Two

Original Preface, p. 1
The Principles of Political Economy and Taxation (1821) (Third Edition)

Vol. II, Ch. XIX, p. 384.
(Buch II) (1893)

Grundrisse (1857-1858)
Source: Notebook VII, The Chapter on Capital, pp. 628–629.
Source: What is Political Philosophy (1959), p. 77

Quoted in Chapter 13, Part 3 of "The Face Of The Third Reich" by Joachim C. Fest.

Source: The Limits To Capital (2006 VERSO Edition), Chapter 13, Crisis In The Space Economy Of Capitalism, p. 445