Thus also, in spiritual experiences, there are currents which we cannot measure or describe. The psychic world is the final world, though its towers and pinnacles no eye hath seen. If we try to shut out for an hour the outer world, and descend into the soul-world of the life of man, we find ourselves in a new environment, and with an outlook over new forms and powers. We find ourselves in a world of images and attractions, of impulses and desires, of instincts and attainments. It is not only a world of separate and individual souls, but each soul is as a thousand; for within each man there is an inner host contending for mastery, and everywhere is the uproar of battle and of spiritual strife. What is the Self that abides in each man? Is it not the consciousness of existence, together with a consciousness of the power of choice? Our individuality lies in the fact that we can decide, choose, and rule among the various contestant impulses of our souls. Herein is the possibility of victory and also the possibility of defeat. Looking inward, we find that Self began when man began. We inherit our dispositions from Adam, as well as from our parents and a long ancestral line. When the first men and women were created, forces were set in action which have resulted in this Me that to-day thinks and wills and loves. Heredity includes savagery and culture, health and disease, empire and serfdom, hope and despair. Each man can say: "In me rise impulses that ran riot in the veins of Anak, that belonged to Libyan slaves and to the Ptolemaic line. I am Aryan and Semite, Roman and Teuton: alike I have known the galley and the palm-set court of kings. Under a thousand shifting generations, there was rising the combination that I to-day am. In me culminates, for my life's day, human history until now." Individuality is thus a unique selection and arrangement of what has been, touched with something--a degree of life--that has not been before. To rise above heredity is to rise above the downward drag of all the years. It is not escaping the special sin of one ancestor, but the sin of all ancestors. _This is the first problem that is set before each man: to rise above his race--to be the culmination of virtue until now_. _The second problem is not greater, but different. It is to mould environment to spiritual uses_. The conditions of this struggle and the opportunities of this conquest are the content of this book. It is meant to deal with the more heroic aspects of the Christian life.