A man may aim at the greatest
happiness within his reach, and yet not try to discover
empirically what amount of pleasure and pain is likely to
come from any given course of action, because he thinks
he has a surer method—a deductive method—for identifying
the conduct that will make him happiest in the long-run.
He may believe this on grounds of revealed religion, because
God has promised happiness as a reward for obedience to
certain commands; or of natural religion,