Abstract
There can be no question but that Lachelier exercised great influence over French philosophy. Gabriel Séailles notes it as do others. Boutroux remarked "il fut un excitateur singulièrement puissant des intelligences," and Benrubi places him with Ravaisson in initiating the tradition of spiritualistic positivism in France. Bergson also recognized and acknowledged his debt to Lachelier, although the tradition which Lachelier helped to father was opposed to Bergsonianism in many important respects. The two traditions can, I suggest, be recognized as dialectical opposites of one another.