Chapter IV. is on our Ideas of good and ill Desert. These are only a
variety of our ideas of right and wrong, being the feelings excited
towards the moral Agent. Our reason determines, with regard to a
virtuous agent, that he ought to be the better for his virtue. The
ground of such determination, however, is not solely that virtuous
conduct promotes the happiness of mankind, and vice detracts from it;
this counts for much, but not for all. Virtue is in itself rewardable;
vice is of essential demerit. Our understanding recognizes the absolute
and eternal rectitude, the intrinsic fitness of the procedure in both
aspects.
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