Are we, then, to lay down one rule for artistic beauty and another rule for natural beauty? Must the first be expressive, but not the second? Is creative mind necessary in one case, and superfluous in the other? And if in the case of nature it be necessary, where is it to be found? On the naturalistic hypothesis, it is not to be found at all. The glory of mountain and of plain, storm and sunshine, must be regarded as resembling the kaleidoscopic pattern of which I just now spoke; with this difference only—that the kaleidoscope was designed to give _some_ pattern, though no one pattern more than another; while nature was not designed with any intention at all, and gives us its patterns only by accident. I know not whether you will think that this train of thought is helped or hindered by bringing it into relation with our scientific knowledge of natural realities. The world which stirs our æsthetic emotions is the world of sense, the world as it appears. It is not the world as science asks us to conceive it. This is very ill-qualified to afford æsthetic delight of the usual type; although the contemplation of complicated relations reduced to law may produce an intellectual pleasure in the nature of æsthetic interest. Yet none, I think, would maintain that mass and motion abstractly considered, nor any concrete arrangement of moving atoms or undulating ether, are beautiful as represented in thought, or would be beautiful could they become objects of perception. We have a bad habit of saying that science deals with nothing but “phenomena.” If by phenomena are meant appearances, it is to æsthetics rather than to science that, on the principle of Solomon’s judgment, phenomena most properly belong. To get away from appearances, to read the physical fact behind its sensuous effect, is one chief aim of science; while to put the physical fact in place of its sensuous effect would be the total and immediate ruin of beauty both in nature and in the arts which draw on nature for their material. Natural beauty, in other words, would perish if physical reality and physical appearance became one, and we were reduced to the lamentable predicament of perceiving nature as nature is!