The true way of salvation is to save a man’s will. Whatever is not deep enough to save a man’s will is vanity. All the wonderful feelings and clear thoughts are only external. A man can obtain happiness, comfort, and peace by believing in God. He can also understand the mysteries of God and have high, wonderful knowledge. Yet he still does not have the deepest union with God. Apart from the union of the will with God, there is no other union in this world.