In his classic The Spiritual Combat and a Treatise on Peace of Soul, Dom Lorenzo Scupoli wrote of the absolute necessity of striving to discard the “old man” in ourselves if we want to overcome evil: “The most effective remedy against evil is purity of heart. Everyone engaged in the spiritual combat must be armed with it, discarding the old man and putting on the new. The remedy is applied in this way. In everything that we undertake, pursue, or reject, we divest ourselves of all human considerations, and do only what is conformable to the will of God.”