About the kindest criticism that the socialist makes of the anarchist is that he is a child, while the anarchist is convinced that the socialist is a Philistine and an inbred conservative who, should he ever get power, would immediately hang the anarchists. They are traditional enemies, who seem utterly incapable of understanding each other. Intellectually, they fail to grasp the meaning of each other's philosophy. It is but rare that a socialist, no matter how conscientious a student, will confess he fully understands anarchism. On the other hand, no one understands the doctrines of socialism so little as the anarchist.

p. 92-93 - Violence and the Labor Movement (1914)