This paper studies Francisque Bouillier’s contribution to cousinian Spiritualism, from his first text on the History of Cartesian Philosophy from 1839 to the publication of Du principe vital et de l’âme pensante, a work which was likewise considerably amended as a result of the polemics it gave rise to. The paper is concerned with the reception of Leibniz in a double sense. In a positive sense, Bouillier managed to reintegrate in the caricature of the Cartesian soul conceived by the Cousinians, (...) a force that was criticized by the latter. In a negative sense to the extent that, for Bouillier, the direct re-appropriation of Leibniz’s dynamic ontology was impossible without completely breaking with Cousin himself. Hence, Bouillier’s reception of Leibniz took the form of a progressive suppression of a monadological tendency in favor of a rehabilitation of a theory of minute perceptions. The primacy of the interior sense that results from this allowed him to construct a Descar.. (shrink)