We metaphorically apply the idea of sweetness to sights and sounds; but as the qualities of bodies by which they are fitted to excite either pleasure or pain in these senses are not so obvious as they are in the others, we shall refer an explanation of their analogy, which is a very close one, to that part wherein we come to consider the common efficient cause of beauty, as it regards all the senses.

I do not think anything better fitted to establish a clear and settled idea of visual beauty than this way of examining the similar pleasures of other senses; for one part is sometimes clear in one of the senses that is more obscure in another; and where there is a clear concurrence of all, we may with more certainty speak of any one of them.

By this means, they bear witness to each other; nature is, as it were, scrutinized; and we report nothing of her but what we receive from her own information.
SECTION XXVII.
THE SUBLIME AND BEAUTIFUL COMPARED.
On closing this general view of beauty, it naturally occurs that we should compare it with the sublime; and in this comparison there appears a remarkable contrast.

For sublime objects are vast in their dimensions, beautiful ones comparatively small; beauty should be smooth and polished; the great, rugged and negligent: beauty should shun the right line, yet deviate from it insensibly; the great in many cases loves the right line; and when it deviates, it often makes a strong deviation: beauty should not be obscure; the great ought to be dark and gloomy: beauty should be light and delicate; the great ought to be solid, and even massive.

They are indeed ideas of a very different nature, one being founded on pain, the other on pleasure; and, however they may vary afterwards from the direct nature of their causes, yet these causes keep up an eternal distinction between them, a distinction never to be forgotten by any whose business it is to affect the passions.