Mill very well expresses the essence of the matter in the form of a concept by characterising money as the medium of exchange. The essence of money is not, in the first place, that property is alienated in it, but that the mediating activity or movement, the human, social act by which man’s products mutually complement one another, is estranged from man and becomes the attribute of money, a material thing outside man. Since man alienates this mediating activity itself, he is active here only as a man who has lost himself and is dehumanised; the relation itself between things, man’s operation with them, becomes the operation of an entity outside man and above man. Owing to this alien mediator – instead of man himself being the mediator for man – man regards his will, his activity and his relation to other men as a power independent of him and them. His slavery, therefore, reaches its peak. It is clear that this mediator now becomes a real God, for the mediator is the real power over what it mediates to me. Its cult becomes an end in itself. Objects separated from this mediator have lost their value. Hence the objects only have value insofar as they represent the mediator, whereas originally it seemed that the mediator had value only insofar as it represented them. This reversal of the original relationship is inevitable. This mediator is therefore the lost, estranged essence of private property, private property which has become alienated, external to itself, just as it is the alienated species-activity of man, the externalised mediation between man’s production and man’s production. All the qualities which arise in the course of this activity are, therefore, transferred to this mediator. Hence man becomes the poorer as man, i.e., separated from this mediator, the richer this mediator becomes.