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 the manner in which we conduct ourselves. The still, small voice of conscience is there to tell us what is right, in the name of God whose herald it is, to approve of what we do well, to condemn what we do ill. The fundamental norm of right conduct, then, is man's moral nature, morally right conduct is conduct in conformity with man's nature in itself and in all its relations. This constitutes right order in the moral world, which God the Creator and provident Ruler of the universe cannot but will us to observe, and this divine Will or Reason bidding us to observe right order and prohibiting its violation is the eternal law of God, the formal objective rule of morality. Human reason, applied to conduct, or conscience, is the formal subjective rule which makes known to us and applies the objective rule.

2. The morality of a human act belongs to it inasmuch as it issues freely from the will with knowledge of its moral quality. Because it is the free product of the human will, a human or a moral act makes a man culpable or praiseworthy. Now the will alone is free, and so morality belongs properly to the internal act of the will. In a perfect human action, indeed, the external act must follow, if it is in the agent's power, in order to the completeness and perfection of the internal act; otherwise there will be no perfect and efficacious will. But the external act, which is called free only with reference to the will from which it proceeds, cannot have any separate morality of its own, nor of itself can it add to the morality of the internal act. In a complete human act, therefore, consisting of an internal and external action, morality is formally in the internal act alone. Accidentally, on account of longer duration, or repetition, or greater intensity which the external act causes, it may add something to the goodness or malice of the internal act, but not in and by itself. A man is good or bad as his will is good or bad.

From this it must not be concluded that an external sin is the same as an internal sin; that if a man has committed fornication, it is sufficient to confess the desire and intention to do so; the malice of the internal and external acts are the same substantially, but an internal act is different from an external act; and so the sins also differ, for sin is a bad human act.

3. There is considerable difference of opinion as to whether, besides the division into good and bad actions, we must also admit a third class, neither good nor bad, but indifferent. In the abstract, indifferent actions certainly exist; to take a walk,