The first teaching, as far as the spiritual systems of knowledge and experience and achievement are concerned, is obedience. There can be no teaching without this condition of obedience being met. It is not only the student who obeys. It is the teacher, also, who obeys. The teacher obeys his sense of duty, his need to pass on his knowledge, his achievements, to somebody else. He is obeying his inner impulse to transmit. In short, it is an impulse of generosity, kindness, and above all love for humanity, which compels him to do what he is doing. There is no other compulsion.