Also, about the objectivity of the book, one have to keep in mind the aim of the author. He admited latter that the book was really a pedagogic primer (a success considering the book have sold more then 100 000 copies in french and was translated in so many languages). Actually, ‘Anarchism’ was an editor demand and not an author urge (just like Rocker Anarcho-syndicalism BTW). When he first wrote it, he was in heavy reaction against marxism and was just rediscovering anarchism. He admit to have written something about “classical anarchism” and that he does not agree with most of what he write. Actually, not long after that he would describe himself as a libertarian marxists. He latter joinded the burgeoining platformist movement and would stay a due paying member of the UTCL (predecessor of AL) until his dead. If one wants to figure out what was Guerin political outlook, one would have to read one of the various version of “Pour le communisme libertaire” (a collection of essais that was first issued as “Jeunesse du marxisme libertaire”, then re-issued with a bunch of other essais as “Pour le marxisme libertaire” and finaly revamped (with yet another bunch of essai) as “Pour le communisme libertaire”). Unfortunately, I dont think this book was ever translated in english.

Oh, one last note, ‘Anarchism’ is best read together with the ‘Neigther God nor Master’ anthology as most of the quoted text are in there in full.