The distinction we have established between the ways in which the brutes and man are respectively moved by motives exerts a very wide influence upon the nature of both, and has most to do with the complete and obvious differences of their existence.
Moduaren desberdintasun frogatuak,motiboek nola higitzen duten animalia gizakiaren beste modu batera, bien esentzian sakoneraino hedatzen du bere eragina eta bien izatearen desberdintasun sakon eta nabariaren euskarri nagusia ere bada.