Because of the essential make-up of man's mind and spirit, powers that are innate and determined by forces still beyond the scope of analysis, the perception of a harmony of relations, which is beauty, is attended with pleasure, a pleasure that is felt and cannot be explained. This inborn, inexplicable delight is at once the origin of the arts of form and the basis of our appreciation. Each art, as the fashioning of objects of use, as decoration, architecture, and music, is governed by its own intrinsic, inherent laws and rests its appeal upon man's pleasure in form. There is no standard external to the laws of the art itself by which to judge the rightness and the beauty of the individual work. In the arts of use and in decoration and architecture, the beauty of a work, as the beauty of a chair, as in the ordering and appointments of a room, as the beauty of a temple, a theatre, a dwelling, derives primarily from the fitness of the object to its function, and finally from the rhythm of its lines and the harmony of its masses and proportions,--its total form. A chair which cannot be sat in may be interesting and agreeable to look at, but it is not truly beautiful; for then it is not a chair but a curiosity, a bijou, and a superfluity; to be beautiful it must be first of all frankly and practically a chair. A living-room which cannot be lived in with comfort and restfulness and peace of mind is not a living-room, but a museum or a concentrated department store; at best it is only an inclosed space. A beautiful building declares its function and use, satisfies us with the logic and coherence of its parts, and delights us with its reticence or its boldness, its simplicity or its inventiveness, in fine, its personality, as expressed in its parts and their confluence into an ordered, self-contained, and self-sufficing whole. Music, using sound for its material, is a pattern-weaving in tones. The power of music to satisfy and delight resides in the sensuous value of its material and in the character of its pattern as form, the balance and contrast of tonal relations, the folding and unfolding of themes, their development and progress to the final compelling unity-in-variety which constitutes its form and which in its own inherent and self-sufficing way is made the expression of the composer's emotion and musical idea. Lyric poetry is the fitting of rhythmic, melodious, colored words to the emotion within, to the point where the very form itself becomes the meaning, and the essence and mystery of the song are in the singing. Beauty is harmony materialized; it is emotion ordered and made visible, audible, tangible. If in the arts of form we seek further a standard of truth, their truth is not found in their relation to any external verity, but is determined by their correspondence with inner experience.