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 cha