To sum up, it may be said that in the study of political economy we are seeking the reason, connection, and relations in the great multitude of acts arising out of the dependence of desires on the world of things and men.
CHAPTER 2
ECONOMIC MOTIVES
§ I. MATERIAL WANTS, THE PRIMARY ECONOMIC MOTIVES
Feeling urges to economic actions
1. A logical explanation of industry must begin with a discussion of the nature of wants, for the purpose of industry is to gratify wants. An economic want may be defined as a feeling of incompleteness, because of the lack of a part of the outer world or of some change in it. Often the question asked when one first sees a moving trolley car or automobile or bicycle is: What makes it go? The first question to ask in the part of the study of economic society here undertaken is: What is its motive force? Without an answer to that question one cannot hope to understand the ceaseless and varied activities of men occupied in the making of a living. The question merits long and careful study, but the general answer is so simple that it seems almost self-evident: The motive force in economics is found in the feelings of men. It is men's desire to make use of men and things about them which calls forth all the manifold phenomena studied in economics.
Animal species shaped by their environment
2. Wants among animals depend on the environment; that is to say, the utmost that creatures of a lower order than man can do is to take things as they find them. The imagination and intelligence of animals are not developed enough to lead them to desire much beyond that which is ordinarily to be obtained. And so the environment shapes and affects the animal. The fish is fitted to live in the water and thrives there, and we must believe, enjoys living there. The horse and the cow like best the food of the fields, and so each species of animal, in order to survive in the severe struggle for existence, has been forced to fit itself to the conditions in which it lives. After the animal has been thus fitted, its desire is for those things normally to be found in its surroundings. So different animals desire or want different things, but always it is the environment that determines the want, and not the want that determines the environment.