Key to the Science of Theology

Written in 1852 by one of the founding architects of Latter-day Saint theology, Key to the Science of Theology is a passionate argument for the radical restoration of divine knowledge in an age of accelerating intellectual progress. Parley P. Pratt observed a paradox: while science, industry, and secular learning surged forward, religious thought remained mired in calcified creeds and sectarian division. This book was his attempt to break the deadlock, offering a systematic framework that weaves together theology, law, governance, and spiritual philosophy into a unified science of the divine. Pratt believed ancient truths had been lost or corrupted across the centuries, and that their recovery would unite humanity under universal principles of enlightenment. The result is a work that feels distinctly 19th century in its optimistic faith in progress and revelation, yet resonates with perennial questions about religious authority, the relationship between ancient wisdom and modern thought, and whether spiritual knowledge can be systematized like any other discipline. For readers interested in American religious history, the intellectual world of antebellum America, or the foundations of a movement that reshaped the religious landscape of the West.