The whispers of mind are different from the whispers of conscience; and different from both is the Voice of Spirit. The mental voice is nothing but the vibrations of an undecided sense mind. The voice of conscience is that of discrimination and inner wisdom. But the Voice of God, from which prophecies come forth, is the Presence of an Infallible Intuition. Striving yogis should pragmatically view this world as a school. The highest lesson set for each man is the realization that he is not a mortal, beset by pain and mutability, but a free son of God. The good student who is successful in the tests of earthly life and who passes the "final examination" has no need to return for further instruction. He has earned the divine Ph.D.