§ VIII. Science and art are commonly distinguished by the nature of their actions; the one as knowing, the other as changing, producing, or creating. But there is a still more important distinction in the nature of the things they deal with. Science deals exclusively with things as they are in themselves; and art exclusively with things as they affect the human senses and human soul.[8] Her work is to portray the appearance of things, and to deepen the natural impressions which they produce upon living creatures. The work of science is to substitute facts for appearances, and demonstrations for impressions. Both, observe, are equally concerned with truth; the one with truth of aspect, the other with truth of essence. Art does not represent things falsely, but truly as they appear to mankind. Science studies the relations of things to each other: but art studies only their relations to man; and it requires of everything which is submitted to it imperatively this, and only this,--what that thing is to the human eyes and human heart, what it has to say to men, and what it can become to them: a field of question just as much vaster than that of science, as the soul is larger than the material creation. § IX. Take a single instance. Science informs us that the sun is ninety-five millions of miles distant from, and 111 times broader than, the earth; that we and all the planets revolve round it; and that it revolves on its own axis in 25 days, 14 hours and 4 minutes. With all this, art has nothing whatsoever to do. It has no care to know anything of this kind. But the things which it does care to know, are these: that in the heavens God hath set a tabernacle for the sun, "which is as a bridegroom coming out of his chamber, and rejoiceth as a strong man to run a race. His going forth is from the end of the heaven, and his circuit unto the ends of it, and there is nothing hid from the heat thereof." § X. This, then, being the kind of truth with which art is exclusively concerned, how is such truth as this to be ascertained and accumulated? Evidently, and only, by perception and feeling. Never either by reasoning, or report. Nothing must come between Nature and the artist's sight; nothing between God and the artist's soul. Neither calculation nor hearsay,--be it the most subtle of calculations, or the wisest of sayings,--may be allowed to come between the universe, and the witness which art bears to its visible nature. The whole value of that witness depends on its being _eye_-witness; the whole genuineness, acceptableness, and dominion of it depend on the personal assurance of the man who utters it. All its victory depends on the veracity of the one preceding word, "Vidi."