Charles Fillmore, the co-founder of the Unity Church, wrote the book Twelve Powers of Man. The book delves into the concept of the twelve spiritual abilities that every human being possesses, which include faith, love, wisdom, strength, and imagination. Fillmore shows how to acquire and use these abilities to overcome difficulties, achieve goals, and live a full life. He illustrates his points with biblical references and metaphysical principles. Twelve Powers of Man is a spiritual guidebook that takes a fresh look at personal development and self-awareness.