From the point attained in the lecture on "A Working Philosophy," a point I believe to be clearly indicated by Christian philosophy and sharply differentiated from that of paganism or modernism, I would adventure further and even into a field of pure theory where I can adduce no support or justification from any other source. Speculation along this line may be dangerous, even unjustifiable; certainly it introduces the peril of an attempt to intellectualize what cannot be apprehended by the intellectual faculty, an effort which has been the obsession of modernism and has resulted in spiritual catastrophe. On the other hand we are confronted by a definite and plausible system worked out by those who were without fear of these consequences, and while this already is losing something of its common acceptance, it is still operative, indeed is the only working system and consistent theory of the majority of thinking men outside the limits of Catholicism. I think it wrong both in its assumptions and its inferences, and it certainly played a deplorable part in the building up of the latest phase of modern civilization, while its persistence is, I am persuaded, a barrier to recovery or advance. This theory, which has gradually been deduced from the wonderful investigations, tabulations and inferences of Darwin, Tyndall, Huxley, Spencer and others of the great group of British intellectuals and scientists of the nineteenth century, is known under the general title of Evolution. The following suggestions are offered with extreme diffidence, and only as uncertain and indeterminate approximations. In some respects they seem not inconsistent with the most recent scientific research which already is casting so much doubt on many of the assumed factors behind evolution and on the accepted methods of its operation. The true solution, if it is found, will result from the cooperation of scientists, philosophers and theologians, illuminated by the fire of the Divine Wisdom--Hagia Sophia--for in such a problem as this, almost the final secret of the Cosmos, no single human agency acting alone can hope to achieve the final revelation, while all acting together could hardly escape falling into "the falsehoods of their own imaginings" if they relied solely on their unaided efforts in the intellectual sphere.