and increaſing the exterior Extent of our Being, we ſeldom make Uſe of that interior Senſe which reduces us to our true Dimenſions, and which ſeparates from us every thing that makes no Part of us. This is, however, the Senſe we muſt make uſe of, if we intend to know ourſelves; this is the only Senſe by which we can judge ourſelves. But the Difficulty is to give this Senſe its Activity and proper Extent; to free our Soul, in which it reſides, from every Illuſion of our Underſtanding: We have loſt the Habit of employing it; it has remained in a State of Inaction in the Midſt of the Tumult bred by our corporeal Senſations, and has been parched up by the Heat of our Paſſions; the Heart, the Mind, the Senſes, every thing has laboured to oppoſe it." Hiſt. Nat. T. 4. p. 151. de la Nature de l'homme.
Discourse. Pag. 15.
(3.) The Alterations which a long Habit of walking upon two Legs might have produced in Man's Body, the Relations ſtill obſervable between his Arms and the Fore-feet of Qua-
