There are three kinds of people among those who offer prayer. One person in praying feels he is fulfilling a certain duty, which he considers to be one among the other duties of life. ... The second kind of person who offers prayers is the one who prays because he has been taught to do so, and yet is uncertain as to whether there is any God and whether his prayers are really heard. ... Then there is a third person who has imagination which is strengthened by faith. He not only prays to God, but he prays before God, in the presence of God. Once imagination has helped a man to bring the presence of God before him, God is awakened in his own heart.