Engels: Before capitalistic production, i.e., in the Middle Ages, the system of petty industry obtained generally, based upon the private property of the labourers in their means of production; {in the country,} the agriculture of the small peasant, freeman or serf; in the towns, the handicrafts. The instruments of labour - land, agricultural implements, the workshop, the tool - were the instruments of labour of single individuals, adapted for the use of one worker, and, therefore, of necessity, small, dwarfish, circumscribed. But, for this very reason they belonged, as a rule, to the producer himself. To concentrate these scattered, limited means of production, to enlarge them, to turn them into the powerful levers of production of the present day - this was precisely the historic role of capitalist production and of its upholder, the bourgeoisie. In Part IV of Capital, Marx has explained in detail, how since the fifteenth century this has been historically worked out through the three phases of simple co-operation, manufacture and modern industry. But the bourgeoisie, as is also shown there, could not transform these puny means of production into mighty productive forces without transforming them, at the same time, from means of production of the individual into social means of production only workable by a collectivity of men. The spinning-wheel, the hand-loom, the blacksmith's hammer, were replaced by the spinning-machine, the power-loom, the steam-hammer; the individual workshop by the factory implying the co-operation of hundreds and thousands of workmen. In like manner, production itself changed from a series of individual into a series of social acts, and the products from individual to social products. The yarn, the cloth, the metal articles that now came out of the factory were the joint product of many workers, through whose hands they had successively to pass before they were ready. No one person could say of them: “I made that; this is my product.” But where, in a given society, the fundamental form of production is that spontaneous division of labour, there the products take on the form of commodities whose mutual exchange, buying and selling, enable the individual producers to satisfy their manifold wants. And this was the case in the Middle Ages. The peasant, e.g., sold to the artisan agricultural products and bought from him the products of handicraft. Into this society of individual producers, of commodity producers, the new mode of production thrust itself. In the midst of the old division of labour, grown up spontaneously and upon no definite plan, which had governed the whole of society, now arose division of labour upon a definite plan, as organised in the factory; side by side with individual production appeared social production. The products of both were sold in the same market, and, therefore, at prices at least approximately equal. But organisation upon a definite plan was stronger than spontaneous division of labour. The factories working with the combined social forces of a collectivity of individuals produced their commodities far more cheaply than the individual small producers. Individual production succumbed in one department after another. Socialised production revolutionised all the old methods of production. But its revolutionary character was, at the same time, so little recognised that it was, on the contrary, introduced as a means of increasing and developing the production of commodities. When it arose, it found readymade, and made liberal use of, certain machinery for the production and exchange of commodities: merchants' capital, handicraft, wage-labour. Socialised production thus introducing itself as a new form of the production of commodities, it was a matter of course that under it the old forms of appropriation remained in full swing, and were applied to its products as well. The first capitalists found, as we have said, wage-labour ready-made for them. But it was exceptional, complementary, accessory, transitory wage-labour. The agricultural labourer, though, upon occasion, he hired himself out by the day, had a few acres of his own land on which he could at all events live at a pinch. The guilds were so organised that the journeyman of today became the master of tomorrow. But all this changed, as soon as the means of production became socialised and concentrated in the hands of capitalists. The means of production, as well as the product, of the individual producer became more and more worthless; there was nothing left for him but to turn wage-worker under the capitalist. Wage-labour, aforetime the exception and accessory, now became the rule and basis of all production; aforetime complementary, it now became the sole remaining function of the worker. The wage-worker for a time became a wage-worker for life. The number of these permanent wageworkers was further enormously increased by the breaking-up of the feudal system that occurred at the same time, by the disbanding of the retainers of the feudal lords, the eviction of the peasants from their homesteads, etc. The separation was made complete between the means of production concentrated in the hands of the capitalists, on the one side, and the producers, possessing nothing but their labour-power, on the other. The contradiction between socialised production and capitalistic appropriation manifested itself as the antagonism of proletariat and bourgeoisie. With the seizing of the means of production by society production of commodities is done away with, and, simultaneously, the mastery of the product over the producer. Anarchy in social production is replaced by systematic, definite organisation. The struggle for individual existence disappears. Then for the first time man, in a certain sense, is finally marked off from the rest of the animal kingdom, and emerges from mere animal conditions of existence into really human ones. The whole sphere of the conditions of life which environ man, and which have hitherto ruled man, now comes under the dominion and control of man who for the first time becomes the real, conscious lord of nature because he has now become master of his own social organisation. The laws of his own social action, hitherto standing face to face with man as laws of nature foreign to, and dominating him, will then be used with full understanding, and so mastered by him. Man’s own social organisation, hitherto confronting him as a necessity imposed by nature and history, now becomes the result of his own free action. The extraneous objective forces that have hitherto governed history pass under the control of man himself. Only from that time will man himself, with full consciousness, make his own history - only from that time will the social causes set in movement by him have, in the main and in a constantly growing measure, the results intended by him. It is the humanity's leap from the kingdom of necessity to the kingdom of freedom. www.marxists.org/archive/marx/works/1877/anti-duhring/ch24.htm