Aristotle, that universal genius, had discovered Political Economy, and it was the historical method which revealed it to him. Be it added, that the great philosopher had seen but one phase of the science, chrematistics, and that his ideas here bear the impress of the age in which he lived. Aristotle, however, distinguished this science from all others and from domestic economy, which is so akin to it. Doubtless, he did not found the modern study of Political Economy, but his powerful intellect gave him a presentiment of it. The honor of producing at once, Adam Smith, Quesnay and Turgot belongs to the eighteenth century. It was in the course of philosophy at Glasgow that this study found a definite place. The illustrious founder of the science of Political Economy did not contemplate dissolving the ancient alliance between it and the moral sciences, history, philosophy, jurisprudence, belles-lettres—all of which he had explored and studied profoundly. Let those whose ambition it is to walk, even at a distance, in the footsteps of Adam Smith, not forget what was the cradle of the noble study to which they have devoted their intellects. L. WOLOWSKI. INTRODUCTION. Chapter I. Fundamental Ideas. Section I. Goods—Wants. The starting point, as well as the object-point of our science is Man.(49) Every man has numberless wants, physical and intellectual.(50)(51) Wants are either necessaries, decencies (_Anstandsbedürfnisse_) or luxuries. The non-satisfaction of necessary wants causes disease or death; that of the wants of decency endangers one’s social position.(52) The much greater number, and the longer continuance of his wants are among the most striking differences between man and the brute:(53) wants such as clothing, fuel,(54) tools, and those resulting from his much longer period of infancy; which last, together with other causes, has contributed so largely to make marriage necessary and universal. While the lower animals have no wants, but necessities, and while their aggregate-want, even in the longest series of generations, admits of no qualitative increase, the circle of man’s wants is susceptible of indefinite extension.(55) And, indeed, every advance in culture made by man finds expression in an increase in the number and in the keenness of his rational wants. No man who distinguishes himself in anything, but feels spurred thereto by a peculiar want; and this want is both the cause and the effect of the power which is peculiar to him. No one but the poet feels the want of poetizing; no one but the philosopher, of philosophizing. In every particular, intellectual or physical, in which the man is in advance of the child, he experiences new wants unknown to the child. Our education consists, for the most part, in awakening wants and providing for their satisfaction.