To endeavor to satisfy man, therefore, with descriptions of the actual is preposterous. The innermost meaning of personal and social life lies in the contrast between what we are and what we may become. Beyond the achieved present and the demonstrable future, stands the ideal, whose possibility we can never know as a truth without faith enough to try. When, therefore, one hears disparagement of faith as a poor makeshift for knowledge, he may be pardoned a sharp rejoinder. When has man ever found solid knowledge in this most important realm of human possibilities, without faith as the pioneer? We do not know first and then supply by belief what knowledge lacks. _We believe first, as Columbus did, and then find new continents because what faith first suggested a great venture has confirmed._ When Stephenson proposed to run a steam car forty miles an hour, a host of wise-acres proved the feat impossible on the ground that no one could move through the air so rapidly and still survive. If now we know that one easily survives a speed of over a hundred miles an hour in an aeroplane, it is because a faith that _saw_ and _dared_ introduced us to the information. We know now that democracy is not a futile dream, nor the conquest of the air by wireless and of the land by electricity a madman's frenzy; we know truths of highest import and certainty from the usefulness of radium to the wisdom of religious liberty, and all this knowledge existed as belief in possibility before it became truth in fact. Faith was "assurance of things hoped for, a conviction of things not seen" (Hebrews 11:1). Faith is no makeshift. Its power is nowhere felt more effectively than in the achievement of knowledge. IV So far is faith, then, from being blind credulity, that it alone deserves to be called the Great Discoverer. Everywhere faith goes before as a pioneer and the more prosaic faculties of the mind come after to civilize the newly opened territory. In the evolution of the senses touch developed first. All the knowledge that any creature had, concerned the tangible. But in time other senses came. Dimly and uncertainly creatures discerned by hearing and seeing the existence of distant objects. They became aware of presences which as yet they could not touch; they were furnished with clues, in following which they found as real what at first had been intangible. Such a relation faith bears to knowledge. Faith, said Clement of Alexandria, is the "ear of the soul." Said Ruskin, faith is "veracity of insight." By it we hear what as yet we cannot touch and see what the arms of our logic are not long enough to reach.