The truth is that with the progress of the race the adventure of life is elevated and enlarged, and in consequence faith grows not less but more necessary. _The faiths of a savage are meager compared with a modern man's._ The Australian bushman never dreams of laboring for social ideals even a few years ahead. What can he know of those superb faiths in economic justice and international brotherhood, which even in the face of overwhelming difficulty, master the best of modern men? The primitive mind was not curious enough to wonder whether the sun that rises in the morning was the same that set the night before. What could such a mind understand of modern science's faith in the universal regularity of law? Put a Moro head hunter beside Mr. Edison, and see how incalculable the difference between them, not simply in their knowledge, but in their faith as to what it is possible for humanity to do with nature! Or put a fetish worshipper from Africa beside Phillips Brooks and compare the faith of the one in his idol with the faith of the other in God. Faith does not dwindle as wisdom grows; vision and valor are not less important. _The difference between the twentieth century man and the savage is quite as much in the scope and quality of their faith as in the range and certainty of their knowledge._ Faith, therefore is not a transient element in human life, to be evicted by growing science. For whatever life may _know_, life _is_ adventure; and as the adventure widens its horizons, the demand for faith is correspondingly increased. If one tries to imagine the world with all faith gone--knowledge supposedly having usurped its place--he must conceive a world where no conscious life and effort remain at all. Take trust in testimony away from courts of law, and unsure experiments from the physician's practice; refuse the teacher his confidence in growing minds and the business man his right to ventures that involve uncertainty; abstract from civic reforms all faith in a better future, from science all unproved postulates, from society all mutual trust and from religion all belief in the Unseen, and life would become an "inane sand heap." A man who tries to live without faith will die of inertia. A society that makes the attempt will be paralyzed within an hour. The question is not whether or no we shall live by faith. The question is rather--By what faiths shall we live? What range and depth and quality shall they have? How reasonable and how assured shall they be? IV