Desgabets also subscribed to the Cartesian conception of mind as an immaterial substance whose essence is thought. The distinction between mind and matter is thus a real and substantial one, impossible not to perceive: “Never has an infant asked for lies or truths for breakfast, nor has he imagined that the stones encountered along his path were the gross thoughts of some countryman” (OPD 5: 197). Minds, or immaterial substances, are of three kinds: uncreated, which is God; mind detached from bo