In the first place, I fancy, that it is owing to the fact that this book, as indeed, all my writings at that time, was prohibited in Germany soon after the publication of the anti-Socialist laws. Whosoever was not fettered by the inherited officialdom of the countries of the Holy Alliance should have clearly seen the effect of this measure—the double and treble sale of the prohibited books, and the advertisement of the impotence of the gentlemen in Berlin, who issued injunctions and could not make them effective. Indeed the amiability of the Government was the cause of the publication of several new editions of my shorter writings, as I am able to affirm. I have no time for a proper revision of the text and so allow it to go to press, just as it is.
But there is still an additional circumstance. The "system" of Herr Duehring here criticised spreads over a very extensive theoretical ground and I was compelled to pursue him all over it and to place my ideas in antagonism to his. Negative criticism thereupon became positive; the polemic developed into a more or less connected exposition of dialectic methods and the socialist philosophy, of which Marx and myself are representative, and this in quite a number of places. These our philosophic ideas have had an incubation period of about twenty years since they were first given to the world in Marx's "Misère de la Philosophie" and the Communist Manifesto until they obtained a wider and wider influence through the publication of "Capital" and now find recognition and support far beyond the limits of Europe in all lands where a proletariat exists together with progressive scientific thinkers. It seems that there is also a public whose interests in this matter are sufficient to induce them to purchase the polemic against Duehring's opinions, in spite of the fact that it is now without an object, and who evidently derive pleasure from the positive development.
I must call attention to the fact, by the way, that the views here set out were, for by far the most part, developed and established by Marx, and only to a very slight degree by myself, so that it is understood that I have not represented them without his knowledge. I read the entire manuscript to him before sending it to press and the tenth chapter of the section on Political Economy was written by Marx and unfortunately had to be somewhat abbreviated by me.
It was our wont to mutually assist each other in special branches of work.
The present edition is with the exception of one chapter an unchanged edition of the former. I had no time for revision although there was much in the mode of presentation which I wanted altered. But there is incumbent upon me the duty of preparing for publication the manuscripts which Marx left, and this is much more important than anything else. Then my conscience rebels against making any changes. The book is controversial and I have an idea that it is unfair to my antagonist for me to alter anything when he cannot do so. I could only claim the right to reply to Herr Duehring's answer. But what Herr Duehring has written with respect to my attack I have not read and shall not do so, unless obliged. I am theoretically done with him. Besides I must observe the rules of literary warfare all the more closely as a despicable wrong has since been inflicted upon him by the University of Berlin. It has been chastised for this, indeed. A university which so degrades itself as to refuse permission to Herr Duehring to teach under the known circumstances should not be surprised if a Herr Schwenninger is forced upon it under circumstances just as well known.
The one chapter in which I have permitted myself any explanations is the Second of the Third Section "Theory." Here where the sole concern is the presentation of a most important part of the philosophy which I represent, my antagonist cannot complain if I put myself to some trouble to speak popularly and to generalise. This was undoubtedly a special occasion. I had made a French translation of three chapters of the book (the First of the Introduction and the First and Second of the Third Section) into a separate pamphlet for my friend Lafargue, and the French edition afterwards served as a basis for one in Italian and one in Polish. A German edition was provided under the title "The Development of Socialism from Utopia to Science." The latter has exhausted three editions in a few months and has also made its appearance translated into Russian and Danish. In all these publications only the chapter in question was added to and it would have been pedantic in me if I had confined myself to the actual wording of the original in the new edition in spite of the later and international form which it had assumed.
Where I wished to make changes had particular reference to two points. In the first place with regard to primitive history, as far as known, to which Morgan was the first to give us the key in 1877. In my book "The Origin of the Family, Private Property and the State," Zurich, 1884, I have since had an opportunity of working up material more lately accessible which I employed in this later work. In the second place, as far as that portion which is concerned with theoretical science is concerned, the presentation of the subject is very defective and a much more definite one could now be given. If I did not allow myself the right of improving it now, I should be in duty bound to pass criticism on myself instead of the other.
Marx and I were probably the first to import the well known dialectic of the German idealistic philosophy into the materialistic view of nature and history. But to a dialectical and at the same time materialistic view of nature there pertains an acquaintance with mathematics and natural science. Marx was a sound mathematician but the sciences we only knew in part, by fits and starts, sporadically. After I retired from mercantile pursuits and went to London and had time, I made as far as possible a complete mathematical and scientific "molting," as Liebig calls it, and spent the best part of eight years on it. I was occupied with this molting process when it chanced that I was called upon to busy myself with Herr Duehring's so-called philosophy. If, therefore, I often fail to find the correct technical expression, and am a little awkward in the field of natural science it is only too natural. On the other hand the consciousness of insecurity which I have not yet got over has made me cautious. Actual blunders respecting facts up to the present known, and incorrect presentations of theories thus far recognised cannot be proved against me. In this relation just one great mathematician, who is laboring under a mistake, has complained to Marx in a letter that I have made a mischievous attack upon the honor of the square root of minus one.
As regards my review of mathematics and the natural science it was necessary for me to reassure myself on some special points—since I had no doubts about the truth of the general proposition—that in nature the same dialectic laws of progress fulfill themselves amid all the apparent confusion of innumerable changes as dominate the apparently accidental in nature; the same laws whose threads traverse the progressive history of human thought, and little by little come to the consciousness of thinking men. These were first developed by Hegel in a comprehensive fashion but in a mystical form. Our efforts were directed towards stripping away this mystical form and making them evident in their full simplicity and universal reality. It was self evident that the old philosophies of nature—in spite of all their actual value and fruitful suggestiveness—could be of no value to us. There was an error in the Hegelian form, as shown in this book, in that it recognised no progression of nature in time, no "one after another" (Nacheinander) but merely "one besides another" (Nebeneinander). This was due on the one hand to the Hegelian system itself which ascribed to the Spirit (Geist) alone a progressive historical development, but on the other hand, the general attitude of the natural sciences was responsible. So Hegel fell far behind Kant in this respect for the latter had already by his nebular hypothesis proclaimed the origin and, by his discovery of the stoppage of the rotation of the earth through the tides, the destruction of the solar system. And finally, I could not undertake to construct the dialectical laws of nature but to discover them in it and to develop them from it.
To do this entirely and in each separate division is a colossal task. Not only is the ground to be covered almost immeasurable but on this entire ground natural science is involved in such tremendous changes that even those who have all their time to give can hardly keep up with it. Since the death of Marx however my mind has been occupied by more pressing duties and so I had to interrupt my work. I must, for the moment, confine myself to the hints in the work before us and wait for a later opportunity to correct and publish the results obtained, probably together