Page:Principles of Political Economy Vol 2.djvu/283



§ 1. three preceding Parts include as detailed a view as our limits permit, of what, by a happy generalization of a mathematical phrase, has been called the Statics of the subject. We have surveyed the field of economical facts, and have examined how they stand related to one another as causes and effects; what circumstances determine the amount of production, of employment for labour, of capital and population; what laws regulate rent, profits, and wages; under what conditions and in what proportions commodities are interchanged between individuals and between countries. We have thus obtained a collective view of the economical phenomena of society, considered as existing simultaneously. We have ascertained, to a certain extent, the principles of their interdependence; and when the state of some of the elements is known, we should now be able to infer, in a general way, the contemporaneous