The relations of capital assume their most externalised and most fetish-like form in interest-bearing capital....
....Capital appears as a mysterious and self-creating source of interest — the source of its own increase. The thing (money, commodity, value) is now capital even as a mere thing, and capital appears as a mere thing. The result of the entire process of reproduction appears as a property inherent in the thing itself. In interest-bearing capital, therefore, this automatic fetish, self-expanding value, money generating money, are brought out in their pure state and in this form it no longer bears the birth-marks of its origin. The social relation is consummated in the relation of a thing, of money, to itself. Instead of the actual transformation of money into capital, we see here only form without content.
...Thus we get the fetish form of capital and the conception of fetish capital. In M — M' we have the meaningless form of capital, the perversion and objectification of production relations in their highest degree, the interest-bearing form, the simple form of capital, in which it antecedes its own process of reproduction. It is the capacity of money, or of a commodity, to expand its own value independently of reproduction — which is a mystification of capital in its most flagrant form.
...As interest-bearing capital, and particularly in its direct form of interest-bearing money-capital capital assumes its pure fetish form...
...Now, the concept of capital as a fetish reaches its height in interest-bearing capital, being a conception which attributes to the accumulated product of labour, and at that in the fixed form of money, the inherent secret power, as an automaton, of creating surplus-value in geometrical progression, so that the accumulated product of labour, as the Economist thinks, has long discounted all the wealth of the world for all time as belonging to it and rightfully coming to it. The product of past labour, the past labour itself, is here pregnant in itself with a portion of present or future living surplus-labour. We know, however, that in reality the preservation, and to that extent also the reproduction of the value of products of past labour is only the result of their contact with living labour; and secondly, that the domination of the products of past labour over living surplus-labour lasts only as long as the relations of capital, which rest on those particular social relations in which past labour independently and overwhelmingly dominates over living labour.