In all of human history no country or no people have suffered such terrible slavery, conquest and foreign oppression and no country and no people have struggled so strenuously for their emancipation than Sicily and the Sicilians.

Philosophy stands in the same relation to the study of the actual world as masturbation to sexual love.

I wish to avenge myself against the One who rules above.

Nothing is easier than to give Christian asceticism a Socialist tinge.

The executive of the modern state is but a committee for managing the common affairs of the whole bourgeoisie.

The most interesting acquaintanceship I have struck up here is that of Colonel Lapinski. He is without doubt the cleverest Pole - besides being an homme d'action [man of action] - that I have ever met. His sympathies are all on the German side, though in manners and speech he is also a Frenchman. He cares nothing for the struggle of nationalities and only knows the racial struggle. He hates all Orientals, among whom he numbers Russians Turks, Greeks, Armenians, etc., with equal impartiality.... His aim now is to raise a German legion in London.

The meaning of peace is the absence of opposition to socialism.