M. Valentine, Theoretical Ethics
“ We thus sum up the constituents of man's moral nature: intelligence, the conscience, free-will, and capacities for affection and doing. Where these are united the subject is organized for knowing duty and fulfilling it. But a final fact, of profound import, needs yet to be added, not as a further faculty, but rather as a consequence resultant from the union and co-action of these endowments, viz.: that this organism of faculties presents not simply a capacity as a possibility of the moral life, but a positive, vital motive adjustment and organic pre-disposition toward it. ”
