Kant no doubt gives the agent's own Perfection as another absolute end; but when we come to examine his notion of perfection, we find that it is not really determinate without the statement of other ends of reason, for the accomplishment of which we are to perfect ourselves. See Met. Anfangsgr. d. Tugendlehre, I. Theil, §v. ``The perfection that belongs to men generally … can be nothing else than the cultivation of one's power, and also of one's will, to satisfy the requirements of duty in general.''

ME Book 3 Chapter 13 Section 4