"At the basis of Proudhon's economic theory we find two essential ideas, that of value and that of exchange. These two ideas are only of interest in the regime of individual property."

"It is important not to confuse federalism as it is understood by the Paris Commune with the so-called federalism which exists in Switzerland and in the United States of America."

"Federalism is above all the negation of the nation and the state."

"Proudhon was an anti-authoritarian, anti-statist communist, a federalist communist. Was he a communist without knowing it? No, he suspected it, and he said it, at least once."

"No serious-minded man would venture to predict exactly how the Revolution, the indispensable condition for social renovation, will come about."

"Federalism is socialist, and for it solidarity is inseparable from liberty."