Here occurs an opportunity of tying a thread that we had left loose when discussing the theory of feeling, or rather the distinction of feeling into the two poles of pleasure and pain, understood, not as a psychological distinction of greater or less, or of mixed states, but as a philosophical distinction of pure states, or of terms that are truly opposed. When the vague and indeterminate term of "feeling" is directed toward theoretical facts and is determined by theoretical philosophy as æsthetic activity or speculative thought, or in some other way, the terms of pleasure and pain are, strictly speaking, not applicable to it. The pure theoretic activity considered in itself, cannot be polarized, as has been seen; it will always attain to the beautiful, always to the true. Only in so far as the theoretic activity is also practical activity, by the law of the unity of the spirit, will the polarization of good and evil, which in that case are called beautiful and ugly, true and false, take place through it if not in it. If the term "feeling" be on the contrary directed to practical facts, and its synonymity with the practical activity (of which feeling would be a distinguishing characteristic) made clear by the Philosophy of the practical, it is clear that to it belongs immediately and no longer mediately that polarity of good and evil. Good and evil then become what theoreticians of feeling call pleasure and pain. These terms are identical with the preceding, as feeling is a fact identical with the practical activity, generically considered.

Doctrines concerning pleasure and happiness: critique.

This theory of pain and pleasure, as the synonyms of the practical positive and negative, helps to put an end to a long series of questions arising in connection with such concepts. Above all, the dispute as to whether pleasure be positive or negative will appear to be unfounded, and, therefore, whether pain have a positive or a negative value, or, finally, whether both be negative: unfounded, since "pleasure" means "positive" and "pain" "negative." At the most, it may be admitted that pain has also a positivity, which is however nothing but the positivity of the negative, that is the real existence of the negative pole.—The theory that man always proposes to himself pleasure as an end is, on the contrary, not only not unfounded, but of such evident truth as not to require enunciation, much less efforts to prove it. If pleasure be nothing but activity, it is natural that man should have no other end save pleasure, that is, activity, life itself. The correction that has been suggested by others, to the effect that man wills, not indeed pleasure, but activity, of which the outcome is pleasure, has but slight exactitude, for the two terms are not distinguishable, and the result is not separable from the activity; the pleasure of travelling is not separable from travelling. That polemic has value at the most against empiricism, which limits pleasure to an arbitrarily determined group of pleasurable facts, that is to say, circumscribes activity to certain particular manifestations of activity, collected in groups or classes, and substituted for the universal concept. Finally, by means of the identification of pleasure and pain with good and evil in general which we have given, all disputes as to the concept of happiness disappear, as to whether it be or be not distinct from that of the good action, practically coherent, and if man propose to himself happiness as an end. "Happiness" is equal to "pleasure," and "pleasure" is equal to "activity." To will the good (that is, to will well and energetically), and to be happy, are the same. The objection raised by some, that man does not will happiness, but a certain happiness, that he does not will pleasure, but a certain pleasure, not the good, but a certain good, is valid; but this only amounts to distinguishing volitional man in the act, from the theory of the will, constructed by the philosopher. If Tizio wishes at this moment to go to bed and Caio to take a moonlight walk, bed and walk are the affairs of Tizio and of Caio; for the philosopher there is no Tizio, no Caio, but man in universal; there is neither bed nor moon, but pleasure and the good.

Empirical concepts relating to good and evil.

The practical activity, the will, which is also strife between good and evil, can be illuminated now from this side and now from that by that indivisible unity, according to the accidents of discourse and the varying situations of life. In this way arises a series of concepts which, in so far as they are unilateral, are empirical, and only become again philosophical in the thought of the unity of which they form part. Thus, to make use of a comparison, space in geometry can be analyzed and split up into a first, second, and third dimension; but as spatiality, it is a unicum, which does not possess either one or two or three dimensions; and when in measuring or constructing plans of measurement, we proceed to think one of these dimensions, we become aware that we cannot think them, save all three together, or not as three, but as one. The empirical, practical concepts that arise upon the antithetical and dialectical nature of the will, have had much importance, and it is fitting, therefore, that we should mention and explain at least the principal among them.

Duty of being, ideal, inhibitive, and imperative power.

If the situations of life lead to the directing of the attention chiefly to the aspect of the will striving against inaction and arbitrary choice, it is posited in this strife, in this becoming, as something that is not but must be, not as real, but as ideal. If the greatness of the ideal that is to be and to fill the soul with joy, be set in relief in this struggle, then the ideal appears sweet and smiling, as a joy-bringing and beatific vision. If, on the other hand, the effort of its becoming be set in relief, the ideal can be made into a metaphor, as will opposed to will, as legitimate against rebellious will; and then it assumes a sour, rough, and hard appearance, and the names of inhibitive or imperative power, in so far as it impedes the will, or promotes liberty.

There is no less opportunity and interest in making clear that relation, from the point of view of the negative term, or of evil. A series of descriptive concepts then appears, which present the consciousness of evil, now as obstinate blindness (cor induratum), now as disquiet and scruple, which induce vigilance and circumspection, now as humility, which does not permit forgetting how easy it is to slip into evil. But it is worthy of note that the series of words and empirical concepts that serve to illuminate the satisfaction of the good, the victory won over oneself, tranquillity of conscience, is far less rich. Perhaps this arises precisely because there is less practical interest in celebrating the pleasure of victory than in the inculcation of the necessity for strife and the abhorrence of evil. Why draw attention to joy and to repose when man is already too much inclined to allow himself joy and repose; does not Life allow them to itself and cause other problems to follow on each solution, new perils to follow perils overpast, and the necessity for new struggles? It is therefore of importance to direct the greater sum of attention to those aspects from which the eye is most frequently turned aside. Finally, these various aspects can be placed in relation with the greater or less frequency with which each appears in individuals, thus arriving at the construction of the concepts of virtue and vice, and of the models of the virtuous man, the honest man, the deliberate man, the clever man, and their opposites, the vicious, the dishonest, the unreflective, the incapable man, and so on.

Their incapacity for setting as practical principles.

The same thing happens with these empirical practical concepts as with all the other empirical concepts, of which we have spoken in general. They have been stiffened into philosophical concepts, for the hasty satisfaction of the philosophical need of man. Hence, among others, many of the disputes as to the principle of the Philosophy of the practical. Some indeed maintain that such a principle is to be found in duty or the imperative; others in the idea or the ideal, others in the joy of good, others in the abhorrence of pain, others in virtue, others in enthusiasm, and so on. Each of the above-mentioned theoreticians has the sharpest eyes for the discovery of the defects in the theories of others, but is short-sighted as regards his own. Those who maintain the ideal satirize the form of the categoric imperative as suggestive of police or gendarmerie; those of the imperative and of duty deride the quietist form and the insipid ecstasy proper to the contemplation of ideals; those of the avoidance of pain do not spare their sarcasms for the hunters of joy; those of joy call these plunged in sorrow hypocrites, who also obtain enjoyments for themselves, if in no other way, then secretly: si non caste, caute. The truth is that all are wrong as philosophers, because they all find the principle of the will, not in itself but in an empirical concept, which gives to it an abstract and mutilated appearance. And, on the other hand, all are right, because those aspects are all real, and in each one of them the others can be implicitly shown. The categoric imperative, for instance, contains in itself both the will, which, in so far as it commands itself, is the true will, the joy of being and the sorrow of not being what we wish to be, the ideal, and the necessity of self-realization, and so of entering into strife against irreality, thus becoming imperative, and so on.