In the writings of Aristotle, we find a much richer source for a history of Greek economic thought. Though no extant work of his is devoted to economics, he left a multitude of writings on diverse subjects, as a monument to his wonderful versatility and tireless industry.517 Of these, the Politics and the Ethics are especially fruitful in economic ideas, though, as in the case of Plato, such material is incidental to the main discussion. His general attitude toward wealth and some of its problems, we shall find to be often substantially in agreement with that of Plato. His economic vision was prejudiced by the same ethico-aristocratic spirit. Yet his practical, scientific mind caused him to deal with many economic questions more extensively, more directly, and more incisively than is true of any other Greek thinker. Caution must be observed, however, against reading into his statements more meaning than he purposed to convey. He was not the creator of the science of political economy,518 though his apprehension of many of the chief concepts of economics was probably clearer than has often been admitted by modern economists.519
At the very threshold of economic speculation, Aristotle advanced beyond Plato and Xenophon, in that he perceived the fallacy in the confusion of household and public economy. He saw that they differed, not only in size or numbers, but in essential type.520 In his later discussion of wealth, however, he overlooked his distinction, and fell into the old Greek confusion.
VALUE
The extent of Aristotle’s contribution to the theory of value has been very diversely estimated.521 In a classic passage of the Politics, he distinguishes between the two uses of an object, the direct use for which it