If a person exercises the breath and practices concentration with a scientific idea only, he soon becomes tired. He thinks, "Why take so much trouble? For what result?" If it is done with the thought of God, with the repetition of the names of God, then- by the thought of the idealized God in whom is all perfection, all beauty, who is the Friend to whom we can tell our sorrows, all our sorrows, all our troubles - a happiness comes, a bliss. Saadi says, "In the thought of God is the blessing that it draws us every moment nearer to Him.