It has been acclaimed by countless readers as one of the greatest spiritual masterpieces ever written. No book except the Bible points the way so clearly to inward peace and increased faith in God: "Many words do not satisfy the soul, but a good life comforts the mind, and a pure conscience inspires confidence in God." John Wesley considered it to be of such value to spiritual growth, and the best summary of the Christian life, that he personally translated it for the use of his followers.