The following new edition is, with the exception of a very few changes in form of expression, a reproduction of the former. Only in one chapter, namely in the Xth. of the Second Section (that on Critical History) I have allowed some important emendations, for the following reasons. As has been stated already in the preface to the second edition, this chapter is in all its essentials, the work of Marx. In its first form, which was intended as an article in a review, I was compelled to abbreviate the manuscript of Marx very much, particularly in those points in which the criticism of Herr Duehring's propositions is subordinate to the particular development of the history of economics. But these are just the portions of the manuscript which constitute the greatest and most important of, as regards its permanent interest, part of the work. The places in which Marx gives their appropriate place in the genesis of political economy to such writers as Petty, North, Locke and Hume, I consider myself obliged to give as literally and completely as possible, and still more so, his explanation of the "economic tableaux" by Quesnay, the insoluble riddle of the sphinx to all economists. I have omitted however that part which dealt solely with the writings of Herr Duehring as far as the connection permitted. For the rest, I am perfectly well satisfied with the extent to which the views represented in this work, have made their way into the minds of the working class and the scientists throughout the world since the publication of the former edition. F. ENGELS. _London, 23d May, 1894._ CHAPTER III INTRODUCTION _I. In General._ Modern socialism is in its essence the product of the existence on the one hand of the class antagonisms which are dominant in modern society, between the property possessors and those who have no property and between the wage workers and the bourgeois; and, on the other, of the anarchy which is prevalent in modern production. In its theoretical form however it appears as a development of the fundamental ideas of the great French philosophers of the eighteenth century. Like every new theory it was obliged to attach itself to the existing philosophy however deeply its roots were embedded in the economic fact.