Big industry has brought all the people of the Earth into contact with each other, has merged all local markets into one world market, has spread civ… - Friedrich Engels

With this as its basic constitution, civilization achieved things of which gentile society was not even remotely capable. But it achieved them by setting in motion the lowest instincts and passions in man and developing them at the expense of all his other abilities. From its first day to this, sheer greed was the driving spirit of civilization; wealth and again wealth and once more wealth, wealth, not of society, but of the single scurvy individual–here was its one and final aim. If at the same time the progressive development of science and a repeated flowering of supreme art dropped into its lap, it was only because without them modern wealth could not have completely realized its achievements.

Only sound common sense, respectable fellow that he is, in the homely realm of his own four walls, has very wonderful adventures directly he ventures out into the wide world of research.

The proletariat is that class in society which lives entirely from the sale of its labor and does not draw profit from any kind of capital; whose weal and woe, whose life and death, whose sole existence depends on the demand for labor – hence, on the changing state of business, on the vagaries of unbridled competition.