P.-J. Proudhon, Correspondence related to the Studies in Popular Philosophy
Under the general title of Popular Philosophy, I begin an indefinite series of publications on all sorts of subjects, history, literature, political economy, morals, biography, etc., men and things. All this judged, appreciated, explained, interpreted with the aid of the new philosophical principle, the highest and most fruitful, at once objective and subjective, idea and sentiment, law of man and law of nature, justice. Give me five years of this popularization, and I dare say that the public, today tired, disgusted, skeptical, will again take courage and conceive what a philosophical system is, a kind of encyclopedia, whose principle, law, method, end, means, is right. […]