Karl Barth on Capitalism

Finally, what are we to think of work which, while it is intrinsically neither useful nor harmful, presents so unworthy an aspect just because it is directed neither to good nor evil, nor indeed to man at all, but past him to a purely illusory yet dynamic and, in its conjunction of the two, almost unequivocally demonic process which consists in the amassing and multiplying of possessions expressed in financial calculations (or miscalculations), i.e., the "capital" which in the hands of the relatively few, who pull all the strings, may equally well, in a way wholly out with the control of the vast majority and therefore quite arbitrarily or accidentally, be a source of salvation or perdition for whole nations or generations. - Karl Barth Church Dogmatics Book 3 Volume 4 (T&T Clark, 1961),531-532.

Here Barth essentially calls the present system of capitalism, in which we currently live, a demonic power. He does not mean that free enterprise is evil, but that putting people to work, not to offer services, but to create money is evil. We've all seen the results of this process in Western Civilization today. When people exist for the sake of money, when money loses its value, the few with the resources can leave the many to perish. This is why investing in imaginary funds rather than the production of actual goods and services is a serious moral problem. This is why the Old Testament taught against interest, because it turns currency into a commodity rather than an implicit trade agreement.