This essential volume presents two of the most influential philosophical texts of the Neoplatonist thinker Porphyry, a towering figure in late antiquity whose writings helped bridge the gap between Platonic metaphysics, classical religion, and early Christian theology. In On Abstinence from Animal Food, Porphyry lays out a sweeping ethical, metaphysical, and theological argument for vegetarianism, rooted in the belief that nonviolence toward all living beings is a condition for spiritual purification. Drawing on Pythagorean principles and Stoic discipline, he views dietary practice as intimately connected with the soul's ascent to the divine. His arguments remain strikingly modern in their ethical scope and philosophical rigor. In The Cave of the Nymphs, Porphyry delivers a masterful allegorical interpretation of a passage from Homer's Odyssey, revealing hidden layers of spiritual symbolism tied to the soul's journey through the material world and back toward transcendence. Dense with esoteric insight, this text exemplifies the Neoplatonic method of reading mythology and literature as vehicles for divine truth. Together, these works offer readers a deep immersion in the mystical and ethical concerns of late classical philosophy. They remain indispensable for students of Neoplatonism, comparative religion, ancient ethics, and the intellectual history of vegetarianism and spiritual asceticism.