Indeed, no thoughtful person will be likely to boast that he can fully explain anything. We have only to scrape the surface of our experiences to find fundamental mystery. And how, indeed, as descendants of an extinct race of primates, with a mind still in the early stages of accumulation, should we be in the way of reaching ultimate truth at any point? One may properly urge, however, that as sharp a distinction as possible be made between fictitious mysteries and the unavoidable ones which surround us on every side. How milk turned sour used to be a real mystery, now partially solved since the discovery of bacteria; how the witch flew up the chimney was a gratuitous mystery with which we need no longer trouble ourselves. A "live" wire would once have suggested magic; now it is at least partially explained by the doctrine of electrons. It is the avowed purpose of scientific thought to reduce the number of mysteries, and its success has been marvelous, but it has by no means done its perfect work as yet. We have carried over far too much of mediaeval mysticism in our views of man and his duty toward himself and others. We must now recall the method adopted by students of the natural sciences in breaking away from the standards and limitations of the mediaeval philosophers and establishing new standards of their own. They thus prepared the way for a revolution in human affairs in the midst of which we now find ourselves. As yet their type of thinking has not been applied on any considerable scale to the solution of social problems. By learning to understand and appreciate the scientific frame of mind as a historical victory won against extraordinary odds, we may be encouraged to cultivate and popularize a similar attitude toward the study of man himself. NOTES. [20] St. Ethelred, returning from a pious visit to Citeaux in the days of Henry II, encountered a great storm when he reached the Channel. He asked himself what _he_ had done to be thus delayed, and suddenly thought that he had failed to _fulfill_ a promise to write a poem on St. Cuthbert. When he had completed this, "wonderful to say, the sea ceased to rage and became tranquil".--_Surtees Society Publications_, i, p. 177. * * * * * VI Narrabo igitur primo opera artis et naturae miranda.... ut videatur quod omnis magica potestas sit inferior his operibus et indigna. --ROGER BACON. I do not endeavor either by triumphs of confutation, or pleadings of antiquity, or assumption of authority, or even, by the veil of obscurity, to invest these inventions of mine with any majesty.... I have not sought nor do I seek either to force or ensnare men's judgments, but I lead them to things themselves and the concordances of things, that they may see for themselves what they have, what they can dispute, what they can add and contribute to the common stock.--FRANCIS BACON (_Preface to the Great Instauration_).