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
