The source and inspiration of French “eclecticism” in the first half of last century was historical; its immediate purpose, the reconstitution of philosophical doctrines of the past; its riper though remoter effects, the formation of a tradition which insisted on reinterpretation as an indispensable preliminary to further construction. And it is largely a result of this that we to-day find commonplace the declaration: “A peculiarity of systems that are epoch-making is that their influence should extend beyond their own generation, and that they should prepare, as it were in secret, the thought that is to come.” So far as fuller and comparative scholarship have been applied to the elucidation of Cartesian philosophy and science, the results appear to fall into three groups. First, largely a result of the impetus of Cousin's teaching at the École Normale, there is the ample story of the development and modifications of Cartesianism in Bouillier's Histoire, and the Cartésianisme of Bordas-Demoulin. Later in the century, after the reaction against Cousin, come the invaluable study of Liard, insisting on the greater importance of Descartes' methodology and physics and the priority of the latter over his metaphysics, and the elegant monograph of Fouillee stressing the “voluntarist” tendencies in Descartes.