The bourgeoisie, wherever it has got the upper hand, has put an end to all feudal, patriarchal, idyllic relations. It has pitilessly torn asunder the motley of ties that bound man to his "natural superiors," and left remaining no other nexus between man and man than naked self-interest, than callous "cash payment.
Karl Marx, Lawrence H. Simon (1994). “Marx: Selected Writings”, p.161, Hackett Publishing