"So long as industry is managed with a view to a profitable price it is quite indispensable to guard against an excessive rate and volume of output. In the absence of all businesslike sabotage the productive capacity of the industrial system would very shortly pass all reasonable bounds, prices would decline disastrously and overhead charges would not be covered, fixed charges on corporation securities and other credit instruments could not be met, and the whole structure of business enterprise would collapse, as it occasionally has done in times of "over-production." There is no doing business without a fair price, since the net price over cost is the motive of business. A protective tariff is, in effect, an auxiliary safeguard against overproduction. Incidentally the fact that its imposition does not result in insufferable hardship serves also to show that the new order of industry is highly productive, quite inordinately productive in fact."