CHAPTER IV.
OF THE TENDENCY OF PROFITS TO A MINIMUM.
§ 1.The tendency of profits to fall as society advances, which has been brought to notice in the preceding chapter, was early recognised by writers on industry and commerce; but the laws which govern profits not being then understood, the phenomenon was ascribed to a wrong cause. Adam Smith considered profits to be determined by what he called the competition of capital; and concluded that when capital increased, this competition must likewise increase, and profits must fall. It is not quite certain what sort of competition Adam Smith had here in view. His words in the chapter on Profits of Stock[1] are, "When the stocks of many rich merchants are turned into the same trade, their mutual competition naturally tends to lower its profits; and when there is a like increase of stock in all the different trades carried on in the same society, the same competition must produce the same effect in them all." This passage would lead us to infer that, in Adam Smith's opinion, the manner in which the competition of capital lowers profits is by lowering prices; that being usually the mode in which an increased investment of capital in any particular trade, lowers the profits of that trade. But if this was his meaning, he overlooked the circumstance, that the fall of price, which if confined to one commodity really does lower the profits of the producer, ceases to have that effect as soon as it extends to all commodities; because, when all things have fallen, nothing has really fallen, except nominally; and even computed in money, the expenses of every producer have diminished as
- ↑ Wealth of Nations, book i. ch. 9.
