sense of symmetry is preserved, as we shall presently see, even to artificialness, by the greatest men, and it is one of the principal sources of deficient feeling in the landscapes of the present day, that the symmetry of nature is sacrificed to irregular picturesqueness. Of this, however, hereafter. CHAPTER IX. OF PURITY, OR THE TYPE OF DIVINE ENERGY. Sec. 1. The influence of light as a sacred symbol. It may at first appear strange that I have not in my enumeration of the types of Divine attributes, included that which is certainly the most visible and evident of all, as well as the most distinctly expressed in Scripture; God is light, and in Him is no darkness at all. But I could not logically class the presence of an actual substance or motion with mere conditions and modes of being, neither could I logically separate from any of these, that which is evidently necessary to the perception of all. And it is also to be observed, that though the love of light is more instinctive in the human heart than any other of the desires connected with beauty, we can hardly separate its agreeableness in its own nature from the sense of its necessity and value for the purposes of life, neither the abstract painfulness of darkness from the sense of danger and incapacity connected with it; and note also that it is not _all_ light, but light possessing the universal qualities of beauty, diffused or infinite rather than in points, tranquil, not startling and variable, pure, not sullied or oppressed, which is indeed pleasant and perfectly typical of the Divine nature. Sec. 2. The idea of purity connected with it. Observe, however, that there is one quality, the idea of which had been just introduced in connection with light, which might have escaped us in the consideration of mere matter, namely purity, and yet I think that the original notion of this quality is altogether material, and has only been attributed to color when such color is suggestive of the condition of matter from which we originally received the idea. For I see not in the abstract how one color should be considered purer than another, except as more or less compounded, whereas there is certainly a sense of purity or impurity in the most compound and neutral colors, as well as in the simplest, a quality difficult to define, and which the reader will probably be surprised by my calling the type of energy, with which it has certainly little traceable connection in the mind. Sec. 3. Originally derived from conditions of matter. Sec. 4. Associated ideas adding to the power of the impression. Influence of clearness. Sec. 5. Perfect beauty of surface, in what consisting.