The third condition is in regard to the motile. The teacher must not teach with any ulterior selfish motive — for money, name, or fame; his work must be simply out of love, out of pure love for mankind at large. The only medium through which spiritual force can be transmitted is love. Any selfish motive, such as the desire for gain or for name, will immediately destroy this conveying median. God is love, and only he who has known God as love can be a teacher of godliness and God to man.