“Competition becomes transformed into monopoly. The result is immense progress in the socialisation of production. In particular, the process of technical invention and improvement becomes socialised.”

section 11, p. 420
The Evolution of Modern Capitalism: A Study of Machine Production (1906), Ch. XVII Civilisation and Industrial Development

Genetic Epistemology (1968) http://www.marxists.org/reference/subject/philosophy/works/fr/piaget.htm – First lecture
Context: Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality. They are more or less isomorphic to transformations of reality. The transformational structures of which knowledge consists are not copies of the transformations in reality; they are simply possible isomorphic models among which experience can enable us to choose. Knowledge, then, is a system of transformations that become progressively adequate.

Introduction, in Hirst (1909), pp. 287–288
The National System of Political Economy (1841)

Source: Imperialism, the Highest Stage of Capitalism: Full Text of 1916 Edition

[NewsBank, Nurturing the inventor in your child, Southwest Times Record, Fort Smith, Arkansas, August 25, 2000, Pam Cloud Smith]

(1847)

Source: Bad Samaritans: The Myth of Free Trade and the Secret History of Capitalism (2008), Ch. 3: 'My six-year-old son should get a job; Is free trade always the answer?', p. 65
Context: I have a six-year-old son. His name is Jin-Gyu. He lives off me, yet he is quite capable of making a living. I pay for his lodging, food, education and health care. But millions of children of his age already have jobs. Daniel Defoe, in the 18th century, thought that children could earn a living from the age of four.
Moreover, working might do Jin-Gyu's character a world of good. Right now he lives in an economic bubble with no sense of the value of money. He has zero appreciation of the efforts his mother and I make on his behalf, subsidizing his idle existence and cocooning him from harsh reality. He is over-protected and needs to be exposed to competition, so that he can become a more productive person. Thinking about it, the more competition he is exposed to and the sooner this is done, the better it will be for his future development. It will whip him into a mentality that is ready for hard work. I should make him quit school and get a job. Perhaps I could move to a country where child labour is still tolerated, if not legal, to give him more choice in employment.

Memoirs of a Revolutionist (1899) http://dwardmac.pitzer.edu/anarchist_archives/kropotkin/memoirs/memoirstoc.html Part IV, Sect. 3 http://dwardmac.pitzer.edu/anarchist_archives/kropotkin/memoirs/memoirs4_3.html
Context: Belief in an ice-cap reaching Middle Europe was at that time rank heresy; but before my eyes a grand picture was rising, and I wanted to draw it, with the thousands of details I saw in it; to use it as a key to the present distribution of floras and faunas; to open new horizons for geology and physical geography.
But what right had I to these highest joys, when all around me was nothing but misery and struggle for a mouldy bit of bread; when whatsoever I should spend to enable me to live in that world of higher emotions must needs be taken from the very mouths of those who grew the wheat and had not bread enough for their children? From somebody's mouth it must be taken, because the aggregate production of mankind remains still so low.
Knowledge is an immense power. Man must know. But we already know much! What if that knowledge — and only that — should become the possession of all? Would not science itself progress in leaps, and cause mankind to make strides in production, invention, and social creation, of which we are hardly in a condition now to measure the speed?

In Defense of Global Capitalism