The work opens by establishing that the appreciation of beauty is neither a purely sensual nor an intellectual act, but a moral perception termed the theoretic faculty, which recognizes external beauty as a direct gift and manifestation of the Divine. The author examines the foundational types of typical beauty found in inanimate nature, beginning with infinity as manifested in luminous distances, sweeping curves, and subtle gradations, which symbolize divine incomprehensibility and offer the soul an escape from finite limitations. Unity is then explored as the type of divine comprehensiveness, where variety acts merely as a subordinate instrument to connect separate elements into a harmonious whole, supported by apparent proportion and repose, the latter representing divine permanence and the ultimate test of artistic greatness. Symmetry and purity follow as types of divine justice and energy, demonstrating how the active, uncorrupted condition of matter inspires reverence, while moderation serves as the vital girdle and safeguard of all artistic expression, restraining freedom within the boundaries of law.
Transitioning from inanimate matter to organic life, the investigation addresses vital beauty, which manifests in two distinct modes: first as relative, through our unselfish sympathy with the happiness and healthy energy of plants and animals; and second as generic, through the perfect fulfilment of an organism's appointed function. Here, the ideal form is shown to emerge not from arbitrary human fancy or the sterile cultivation of over-luxuriant specimens, but from the faithful adherence to type under the natural trials and struggles assigned by Providence. Finally, the inquiry extends to the human form, where bodily ideality is inextricably bound to the moral and intellectual condition of the soul. True beauty in man requires the patient study of actual models combined with the rigorous banishment of the immediate signs of sin, pride, sensuality, fear, and ferocity. Ultimately, the text argues that the cultivation of true taste demands an open, unselfish heart capable of recognizing the seal of divine order across all creation, uniting aesthetic judgment with deep moral responsibility.