This word (apathy) has come into bad repute, just as if it meant want of feeling, and therefore subjective indifference with respect to the objects of the elective will; it is supposed to be a weakness. This misconception may be avoided by giving the name moral apathy to that want of emotion which is to be distinguished from indifference. In the former, the feelings arising from sensible impressions lose their influence on the moral feeling only because the respect for the law is more powerful than all of them together. It is only the apparent strength of a fever patient that makes even the lively sympathy with good rise to an emotion, or rather degenerate into it. Such an emotion is called enthusiasm, and it is with reference to this that we are to explain the moderation which is usually recommended in virtuous practices:

Insani sapiens nomen ferat, aequus uniqui

Ultra quam satis est virtutem si petat ipsam.*

* Horace. ["Let the wise man bear the name of fool, and the just of unjust, if he pursue virtue herself beyond the proper bounds."]

For otherwise it is absurd to imagine that one could be too wise or too virtuous. The emotion always belongs to the sensibility, no matter by what sort of object it may be excited. The true strength of virtue is the mind at rest, with a firm, deliberate resolution to bring its law into practice. That is the state of health in the moral life; on the contrary, the emotion, even when it is excited by the idea of the good, is a momentary glitter which leaves exhaustion after it. We may apply the term fantastically virtuous to the man who will admit nothing to be indifferent in respect of morality (adiaphora), and who strews all his steps with duties, as with traps, and will not allow it to be indifferent whether a man eats fish or flesh, drink beer or wine, when both agree with him; a micrology which, if adopted into the doctrine of virtue, would make its rule a tyranny.
Remark

Virtue is always in progress, and yet always begins from the beginning. The former follows from the fact that, objectively considered, it is an ideal and unattainable, and yet it is a duty constantly to approximate to it. The second is founded subjectively on the nature of man which is affected by inclinations, under the influence of which virtue, with its maxims adopted once for all, can never settle in a position of rest; but, if it is not rising, inevitably falls; because moral maxims cannot, like technical, be based on custom (for this belongs to the physical character of the determination of will); but even if the practice of them bec............