Page:A discourse upon the origin and foundation of the inequality among mankind (IA discourseuponori00rous).pdf/253

 and increaing the exterior Extent of our Being, we eldom make Ue of that interior Sene which reduces us to our true Dimenions, and which eparates from us every thing that makes no Part of us. This is, however, the Sene we mut make ue of, if we intend to know ourelves; this is the only Sene by which we can judge ourelves. But the Difficulty is to give this Sene its Activity and proper Extent; to free our Soul, in which it reides, from every Illuion of our Undertanding: We have lot the Habit of employing it; it has remained in a State of Inaction in the Midt of the Tumult bred by our corporeal Senations, and has been parched up by the Heat of our Paions; the Heart, the Mind, the Senes, every thing has laboured to oppoe it." Hit. Nat. T. 4. p. 151. de la Nature de l'homme.

Pag. 15.

(3.) The Alterations which a long Habit of walking upon two Legs might have produced in Man's Body, the Relations till obervable between his Arms and the Fore-feet of