From back cover:
Anarchists are opposed to authority both from below and from above. They do not demand power for the masses, but seek to destroy all power and to decompose these masses into individuals who are masters of their own lives. Therefore anarchists are the most decisive enemies of all types of communism and those who profess to be communists or socialist cannot possibly be anarchists.
It is not by organizing into parties and syndicates that one struggles for anarchy, nor by mass action which, as has been shown, overthrows one barracks only to create another. It is by the revolt of individuals alone or in small groups, who oppose society, impede its functioning and cause its disintegration.