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(3) The art of the BEAUTIFUL PLAY OF SENSATIONS (externally stimulated), which admits at the same time of universal communication, can be concerned with nothing else than the proportion of the different degrees of the disposition (tension) of the sense, to which the sensation belongs, i.e. with its tone. In this far-reaching signification of the word it may be divided into the artistic play of the sensations of hearing and sight, i.e. into Music and the Art of colour.—It is noteworthy that these two senses, besides their susceptibility for impressions so far as these are needed to gain concepts of external objects, are also capable of a peculiar sensation bound up therewith, of which we cannot strictly decide whether it is based on sense or reflection. This susceptibility may sometimes be wanting, although in other respects the sense, as regards its use for the cognition of Objects, is not at all deficient but is peculiarly fine. That is, we cannot say with certainty whether colours or tones (sounds) are merely pleasant sensations or whether they form in themselves a beautiful play of sensations, and as such bring with them in aesthetical judgement a satisfaction in their form. If we think of the velocity of the vibrations of light, or in the second case of the air, which probably far surpasses all our faculty of judging immediately in perception the time interval between them, we must believe that it is only the effect of these vibrations213 upon the elastic parts of our body that is felt, but that the time interval between them is not remarked or brought into judgement; and thus that only pleasantness and not beauty of composition is bound up with colours and tones. But on the other hand, first, we think of the mathematical [element] which enables us to pronounce on the proportion between these oscillations in music and thus to judge of them; and by analogy with which we easily may judge of the distinctions between colours. Secondly, we recall instances (although they are rare) of men who with the best sight in the world cannot distinguish colours, and with the sharpest hearing cannot distinguish tones; whilst for those who can do this the perception of an altered quality (not merely of the degree of sensation) in the different intensities in the scale of colours and tones is definite; and further, the very number of these is fixed by intelligible differences. Thus we may be compelled to see that both kinds of sensations are to be regarded not as mere sensible impressions, but as the effects of a judgement passed upon the form in the play of divers sensations. The difference in our definition, according as we adopt the one or the other opinion in judging of the grounds of Music, would be just this: either, as we have done, we must explain it as the beautiful play of sensations (of hearing), or else as a play of pleasant sensations. According to the former mode of explanation music is represented altogether as a beautiful art; according to the latter, as a pleasant art (at least in part).
Rhetoric may be combined with a pictorial presentation of its subjects and objects in a theatrical piece; poetry may be combined with music in a song, and this again with pictorial (theatrical) presentation in an opera; the play of sensations in music may be combined with the play of figures in the dance, and so on. Even the presentation of the sublime, so far as it belongs to beautiful art, may combine with beauty in a tragedy in verse, in a didactic poem, in an oratorio; and in these combinations beautiful art is yet more artistic. Whether it is also more beautiful may in some of these cases be doubted (since so many different kinds of satisfaction cross one another). Yet in all beautiful art the essential thing is the form, which is purposive as regards our observation and judgement, where the pleasure is at the same time cultivation and disposes the spirit to Ideas, and consequently makes it susceptible of still more of such pleasure and entertainment. The essential element is not the matter of sensation (charm or emotion), which has only to do with enjoyment; this leaves behind nothing in the Idea, and it makes the spirit dull, the object gradually distasteful, and the mind, on account of its consciousness of a disposition that conflicts with purpose in the judgement of Reason, discontented with itself and peevish.
If the beautiful arts are not brought into more or less close combination with moral Ideas, which alone bring with them a self-sufficing satisfaction, this latter fate must ultimately be theirs. They then serve only as a distraction, of which we are the more in need the215 more we avail ourselves of them to disperse the discontent of the mind with itself; so that we thus render ourselves ever more useless and ever more discontented. The beauties of nature are generally of most benefit in this point of view, if we are early accustomed to observe, appreciate, and admire them.
Of all the arts poetry (which owes its origin almost entirely to genius and will least be guided by precept or example) maintains the first rank. It expands the mind by setting the Imagination at liberty; and by offering within the limits of a given concept amid the unbounded variety of possible forms accordant therewith, that which unites the presentment of this concept with a wealth of thought, to which no verbal expression is completely adequate; and so rising aesthetically to Ideas. It strengthens the mind by making it feel its faculty—free, spontaneous and independent of natural determination—of considering and judging nature as a phenomenon in accordance with aspects which it does not present in experience either for Sense or Understanding, and therefore of using it on behalf of, and as a sort of schema for, the supersensible. It plays with illusion, which it produces at pleasure, but without deceiving by it; for it declares its exercise to be mere play, which however can be purposively used by the Understanding.—Rhetoric, in so far as this means the art of persuasion, i.e. of deceiving by a beautiful show (ars oratoria), and not mere elegance of speech (eloquence and style), is a Dialectic, which borrows from poetry216 only so much as is needful to win minds to the side of the orator before they have formed a judgement, and to deprive them of their freedom; it cannot therefore be recommended either for the law courts or for the pulpit. For if we are dealing with civil law, with the rights of individual persons, or with lasting instruction and determination of people's minds to an accurate knowledge and a conscientious observance of their duty, it is unworthy of so important a business to allow a trace of any exuberance of wit and imagination to appear, and still less any trace of the art of talking people over and of captivating them for the advantage of any chance person. For although this art may sometimes be directed to legitimate and praiseworthy designs, it becomes objectionable, when in this way maxims and dispositions are spoiled in a subjective point of view, though the action may objectively be lawful. It is not enough to do what is right; we should practise it solely on the ground that it is right. Again, the mere concept of this species of matters of human concern, when clear and combined with a lively presentation of it in examples, without any offence against the rules of euphony of speech or propriety of expression, has by itself for Ideas of Reason (which collectively constitute eloquence), sufficient influence upon human minds; so that it is not needful to add the machinery of persuasion, which, since it can be used equally well to beautify or to hide vice and error, cannot quite lull the secret suspicion that one is being artfully overreached. In poetry everything proceeds with honesty and candour. It declares itself to be a mere entertaining play of the Imagination, which wishes to proceed as regards form in harmony with the laws of the Understanding;217 and it does not desire to steal upon and ensnare the Understanding by the aid of sensible presentation.92