"This application to natural theology, has thus far had reference to that degree of intrinsic agreeableness which is common to forms in general. But the laws of nature specially tend to the production of curved, regular, and symmetrical objects and motions, in inorganic vegetable and animal bodies; and impose the necessity of similar forms in artificial structures. With a different structure and arrangement of the ocular muscles, those forms peculiarly conducive to our welfare and that of the universe, had possessed no peculiar attractions; and we had felt no special impulse of this kind to conform our own artificial structures to those laws of nature, or to investigate many of the most important works of the Creator. Yet neither gravity or any other law of the external world could have determined the peculiar formation of the muscles of the human eye. We must, therefore, refer their actual structure and location to that Being who gives to the objects of his creative power, and to the principles by which he governs them, such a mutual adaptation as conduces to the greatest achievable good. Thus, while muscular pleasure originally prompts to the observation of the Creator's works, this observation is rewarded and subsequently prompted by a pleasure of an incomparably higher order, of a character purely mental, by the discovery of _moral beauty_, which in rank and refinement surpasses all others. Still, the muscular pleasure of the eye strongly incites to the examination of the numberless forms of beauty in the organic and inorganic kingdoms, such as the symmetrical leaf, the bending bough, the symmetry of the tree itself that of inferior animals, and of the human form. Or we may extend our view to the circular or undulating horizon, the apparent limits of the apparently round world; or we may elevate the eyes to the arched dome of the firmament, on which the arches of the iris and aurora occasionally confer additional beauty. Or with the telescope we may pierce this apparent limit of upward vision, and discover beyond it a universe of spherical and spheroidal worlds, revolving in circular and elliptical orbits, worlds and orbits which present, even in our diminutive diagrams, a high order of beauty, designed to incite us to the contemplation of these most magnificent works of the Creator.