Because beauty with grace is the principal subject of sculpture, it likes the nude, and tolerates clothing only in so far as this does not conceal the form. It makes use of drapery, not as a covering, but as an indirect presentation of the form. This method of presentation greatly engrosses the understanding, since the understanding reaches the perception of the cause, namely the form of the body, only through the one directly given effect, that is to say, the arrangement of the drapery. Therefore in sculpture drapery is to some extent what foreshortening is in painting. Both are suggestions, yet not symbolical, but such that, if they succeed, they force the understanding immediately to perceive what is suggested, just as if it were actually given.
Here I may be permitted in passing to insert a comparison relating to the rhetorical arts. Just as the beautiful bodily form can be seen to the best advantage with the lightest clothing, or even no clothing at all, and thus a very handsome man, if at the same time he had taste and could follow it, would prefer to walk about almost naked, clothed only after the manner of the ancients; so will every fine mind rich in ideas express itself always in the most natural, candid, and simple way, concerned if it be possible to communicate its thoughts to others, and thus to relieve the loneliness that one is bound to feel in a world such as this. Conversely, poverty of mind, confusion and perversity of thought will clothe themselves in the most far-fetched expressions and obscure forms of speech, in order to cloak in difficult and pompous phrases small, trifling, insipid, or commonplace ideas. It is like the man who lacks the majesty of beauty, and wishes to make up for this deficiency by clothing; he attempts to cover up the insignificance or ugliness of his person under barbaric finery, tinsel, feathers, ruffles, cuffs, and mantles. Thus many an author, if compelled to translate his pompous and obscure book into its little clear content, would be as embarrassed as that man would be if he were to go about naked.