Here in strong terms a challenge is put to many of our current ideas. Is not this to revert to an outworn view of the Christian religion--to reassert its dark side, better forgotten, all the horrible emphasis on sin and its consequences introduced into the sunny teaching of Jesus by Paul of Tarsus, and alien to it? Before we answer this question in any direct way, it is worth while to realize for how many of the real thinkers, and the great teachers of mankind, this distinction between good and evil has been fundamental. They have not invented it as a theory on which to base religion, but they have found it in human life, one and all of them. If Walt Whitman or Swami Vivekananda overlook the difference between virtue and vice, and do honour to the courtesan, it simply means that they are bad thinkers, bad observers. The deeper minds see more clearly and escape the confusion into which the slight and quick, the sentimental, hurl themselves. Above all, when God in any degree grows real to a man, when a man seriously gives himself not to some mere vague "contemplation" of God but to the earnest study of God's ways in human affairs, and of God's laws and their working, the great contrasts in men's responses to God's rule become luminous. When God matters to a man, all life shows the result. Good and bad, right and wrong stand out clear as the contrast between light and darkness--they cannot be mistaken, and they matter--and matter for ever. They are no concern of a moment. Action makes character; and, until the action is undone again, the effect on character is not undone. Right and wrong are of eternal significance now in virtue of the reality of God.