SAND George. Histoire de ma vie. Paris, Michel Lévy frères, 1856; 10 vol. in-12, contemporary black half-basin bindings, spines with 4 ribs divided two by two, decorated with gilt flower garlands. First edition in this format. Autograph signed letter from George Sand: A Monsieur Léon Brothier Souvenir affectueux. A social philosopher in the vein of Fourier and Saint-Simon, Brothier was the first writer of the Social Party programme. George Sand said of him: "Of all the philosophers I have read, Brothier is the one who struck me most by the soundness of his reasoning". Nice set despite minor wear to the corners. P. M. Schuhl, George Sand et Léon Brothier, in Revue philosophique de la France et de l'étranger, tome 167, pp. 132-134, 1977.