The very large aggregate value of such assets indicates how imperative it is for the conduct of industrial business under the new order to restrict output within reasonable limits, and at the same time how profitable it is to be able to prevent the excessively high productive capacity of modern industry from outrunning the needs of profitable business. For the prosperity of business it is necessary to keep the output within reasonable limits; that is to say, within such limits as will serve to maintain reasonably profitable prices; that is to say, such prices as will yield the largest obtainable net return to the concerns engaged in the business.

The Vested Interests and the Common Man (1919)