In Clairvoyance, J. C. F. Grumbine presents a structured exploration of the theory, practice, and spiritual significance of clairvoyant perception. Written in the early 20th century as part of his "College of Divine Sciences," Grumbine's book outlines the development of extrasensory faculties, offering both philosophical context and practical exercises. He emphasizes the law-like nature of spiritual gifts and insists that clairvoyance is not mere fortune-telling, but a disciplined awakening of the soul's latent powers. The book blends mysticism, metaphysical idealism, and early New Thought, positioning clairvoyance as a legitimate path to higher knowledge and spiritual realization. Ideal for those curious about occult practice or psychic development.