 There are three main variations of the criticism. A first variation says that there is something unnatural about the profit motive itself. For example, Aristotle argued that we should treat objects in ways that are befitting to their fundamental nature, and since money is not meant to be a good in itself but only a medium of exchange (see  section 1.1),  he concluded that it is unnatural to desire money as an end in itself (Politics, 1252a–1260b). A similar thought is picked up by Marx, who argues that capitalism replaces the natural economic cycle of C–M–C (commodity exchanged for money exchanged for commodity) with M–C–M (money exchanged for commodity exchanged for money). Thus the endless accumulation of money becomes the sole goal of the capitalist, which Marx describes as a form of “fetishism” (Marx 1867, volume I).