However, from the fact that a work produces effects only by its substance, it must not always be inferred that there is a want of form in this work; this conclusion may quite as well testify to a want of form in the observer. If his mind is too stretched or too relaxed, if it is only accustomed to receive things either by the senses or the intelligence, even in the most perfect combination, it will only stop to look at the parts, and it will only see matter in the most beautiful form. Only sensible of the coarse elements, he must first destroy the aesthetic organisation of a work to find enjoyment in it, and carefully disinter the details which genius has caused to vanish, with infinite art, in the harmony of the whole. The interest he takes in the work is either solely moral or exclusively physical; the only thing wanting to it is to be exactly what it ought to be--aesthetical. The readers of this class enjoy a serious and pathetic poem as they do a sermon; a simple and playful work, as an inebriating draught; and if on the one hand they have so little taste as to demand edification from a tragedy or from an epos, even such as the "Messias," on the other hand they will be infallibly scandalised by a piece after the fashion of Anacreon and Catullus. LETTER XXIII. I take up the thread of my researches, which I broke off only to apply the principles I laid down to practical art and the appreciation of its works. The transition from the passivity of sensuousness to the activity of thought and of will can be effected only by the intermediary state of aesthetic liberty; and though in itself this state decides nothing respecting our opinions and our sentiments, and therefore leaves our intellectual and moral value entirely problematical, it is, however, the necessary condition without which we should never attain to an opinion or a sentiment. In a word, there is no other way to make a reasonable being out of a sensuous man than by making him first aesthetic. But, you might object: Is this mediation absolutely indispensable? Could not truth and duty, one or the other, in themselves and by themselves, find access to the sensuous man? To this I reply: Not only is it possible, but it is I absolutely necessary that they owe solely to themselves their determining force, and nothing would be more contradictory to our preceding affirmations than to appear to defend the contrary opinion. It has been expressly proved that the beautiful furnishes no result, either for the comprehension or for the will; that it mingles with no operations, either of thought or of resolution; and that it confers this double power without determining anything with regard to the real exercise of this power. Here all foreign help disappears, and the pure logical form, the idea, would speak immediately to the intelligence, as the pure moral form, the law, immediately to the will.