TWO VOLUME SET. "Le Grands Types" is the grand work of Pierre Laffitte, the leading positivist thinker after the death of Auguste Comte. In this comprehensive treatise he details the lives and problems posed by various historical figures, which he handles within the framework of the positivist theory, mainly by applying each such personality to a stage within Comte`s Law of the Three Stages. The material for these books originated in lectures given during the years 1874-1876. [BOTH VOLUMES]: ribbed spine. Cover rubbed, slightly worn and slightly stained. Cover edges and corners worn. Cover corners and spine upper edges peeling. Spine and spine hinges rubbed. Ex-libris stamp on whitepages. Pencil marks on several pages. Pages yellowing. [VOL.I]: Front cover edge bumped. Front whitepage edge slightly tattered. Title page bottom corner slightly stained. [VOL.II]: Pages 81-122 upper corner bumped and wrinkled. [SUMMARY]: This rare 2 volume set is in good condition.