Such were the splendid achievements of nineteenth-century civilization. But there was a seamy side to this cloth of gold. The vices of our age have been portrayed by a thousand censorious pens, and there is no need here to recapitulate them. They can mostly be summed up by the word "Materialism." That absorption in material questions and neglect of idealistic values which characterized the nineteenth century has been variously accounted for. But, after all, was it not primarily due to the profound disturbance caused by drastic environmental change? Civilized man had just entered a new material world, differing not merely in degree but in kind from that of his ancestors. It is a scientific truism that every living organism, in order to survive, must adapt itself to its environment. Therefore any change of environment must evoke an immediate readjustment on the part of the organism, and the more pronounced the environmental change, the more rapid and thoroughgoing the organic readjustment must be. Above all, speed is essential. Nature brooks no delay, and the disharmonic organism must attune itself or perish. Now, is not readaptation precisely the problem with which civilized man has been increasingly confronted for the past hundred years? No one surely can deny that our present environment differs vastly from that of our ancestors. But if this be so, the necessity for profound and rapid adaptation becomes equally true. In fact, the race has instinctively sensed this necessity, and has bent its best energies to the task, particularly on the materialistic side. That was only natural. The pioneer's preoccupation with material matters in opening up new country is self-evident, but what is not so generally recognized is the fact that nineteenth-century Europe and the eastern United States are in many respects environmentally "newer" than remote backwoods settlements. Of course the changed character of our civilization called for idealistic adaptations no less sweeping. These were neglected, because their necessity was not so compellingly patent. Indeed, man was distinctly attached to his existing idealistic outfit, to the elaboration of which he had so assiduously devoted himself in former days, and which had fairly served the requirements of his simpler past. Therefore nineteenth-century man concentrated intensively, exclusively upon materialistic problems, feeling that he could thus concentrate because he believed that the idealistic conquests of preceding epochs had given him sound moral bases upon which to build the new material edifice.