This is the susceptibility for pleasure or displeasure, merely from the consciousness of the agreement or disagreement of our action with the law of duty. Now, every determination of the elective will proceeds from the idea of the possible action through the feeling of pleasure or displeasure in taking an interest in it or its effect to the deed; and here the sensitive state (the affection of the internal sense) is either a pathological or a moral feeling. The former is the feeling that precedes the idea of the law, the latter that which may follow it. INTRODUCTION ^paragraph 140

Now it cannot be a duty to have a moral feeling, or to acquire it; for all consciousness of obligation supposes this feeling in order that one may become conscious of the necessitation that lies in the notion of duty; but every man (as a moral being) has it originally in himself; the obligation, then, can only extend to the cultivation of it and the strengthening of it even by admiration of its inscrutable origin; and this is effected by showing how it is just, by the mere conception of reason, that it is excited most strongly, in its own purity and apart from every pathological stimulus; and it is improper to call this feeling a moral sense; for the word sense generally means a theoretical power of perception directed to an object; whereas the moral feeling (like pleasure and displeasure in general) is something merely subjective, which supplies no knowledge. No man is wholly destitute of moral feeling, for if he were totally unsusceptible of this sensation he would be morally dead; and, to speak in the language of physicians, if the moral vital force could no longer produce any effect on this feeling, then his humanity would be dissolved (as it were by chemical laws) into mere animality and be irrevocably confounded with the mass of other physical beings. But we have no special sense for (moral) good and evil any more than for truth, although such expressions are often used; but we have a susceptibility of the free elective will for being moved by pure practical reason and its law; and it is this that we call the moral feeling.

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