In countries which are not harassed by struggles between various linguistic groups public education can work if it is limited to reading, writing, and arithmetic. With bright children it is even possible to add elementary notions of geometry, the natural sciences, and the valid laws of the country. But as soon as one wants to go farther, serious difficulties appear. Teaching at the elementary level necessarily turns into indoctrination. It is not feasible to represent to adolescents all the aspects of a problem and to let them choose between dissenting views.

Economics must not be relegated to classrooms and statistical offices and must not be left to esoteric circles. It is the philosophy of human life and action and concerns everybody and everything. It is the pith of civilization and of man’s human existence.

To mention this fact is not to indulge in the often derided weakness of specialists who overate the importance of their own branch of knowledge. Not the economists, but all the people today assign this eminent place to economics.

The paramount role that economic ideas play in the determination of civic affairs explains why governments, political parties, and pressure groups are intent upon restricting the freedom of economic thought. They are anxious to propagandize the “good” doctrine and to silence the voice of the “bad” doctrines. As they see it, truth has no inherent power which could make it ultimately prevail solely by virtue of its being true. In order to carry on, truth needs to be backed by violent action on the part of the police or other armed troops.

We have concluded that the value of each unit of any good is equal to its marginal utility at any point in time, and that this value is determined by the relation between the actor’s scale of wants and the stock of goods available. We know that there are two types of goods: consumers’ goods, which directly serve human wants, and producers’ goods, which aid in the process of production eventually to produce consumers’ goods. It is clear that the utility of a consumers’ good is the end directly served. The utility of a producers’ good is its contribution in producing consumers’ goods.

Factors of production are valued in accordance with their anticipated contribution in the eventual production of consumers’ goods. Factors, however, differ in the degree of their specifity, i.e., the variety of consumers’ goods in the production of which they can be of service. Certain goods are completely specific—are useful in producing only one consumers’ good. Thus, when, in past ages, extracts from the mandrake weed were considered useful in healing ills, the mandrake weed was a completely specific factor of production—it was useful purely for this purpose.

Setting aside the problem of allocating production along the most desired lines and of measuring one product against another, it is evident that every man desires to maximize his production of consumers’ goods per unit of time. He tries to satisfy as many of his important ends as possible, and at the earliest possible time. But in order to increase the production of his consumers’ goods, he must relieve the scarcity of the scarce factors of production; he must increase the available supply of these scarce factors.

What assigns economics its peculiar and unique position in the orbit both of pure knowledge and of the practical utilization of knowledge is the fact that its particular theorems are not open to any verification or falsification on the ground of experience. Of course, a measure suggested by sound economic reasoning results in producing the effects aimed at, and a measure suggested by faulty economic reasoning fails to produce the ends sought. But such experience is always still historical experience, i.e., the experience of complex phenomena.