Metaphysics Of Ethics - Immanuel Kant - Gece Kitaplığı

When it is said of the perfection that belongs to man generally (properly speaking, to humanity), that it is in itself a duty to make this our end, it must be placed in that which may be the effect of ones deed, not in that which is merely an endowment for which we have to thank nature; for otherwise it would not be duty. Consequently, it can be nothing else than the cultivation of ones power (or natural capacity) and also of ones will (moral disposition) to satisfy the requirement of duty in general.