During my subsequent years of stuffy, however, I found myself no nearer an answer to the problem that haunted me. All that I experienced, in scientific work as in life generally, merely gave it an even sharper edge. Everywhere I saw an abyss widening between human knowing and human action. How often was I not bitterly disillusioned by the behaviour of men for whose ability to think through the most complicated scientific questions I had the utmost admiration! On all sides I found this same bewildering gulf between scientific achievement and the way men conducted their own lives and influenced the lives of others. I was forced to the conclusion that human thinking, at any rate in its modern form, was either powerless to govern human actions, or at least unable to direct them towards right ends. In fact, where scientific thinking had done most to change the practical relations of human life, as in the mechanization of economic production, conditions had arisen which made it more difficult, not less, for men to live in a way worthy of man. At a time when humanity was equipped as never before to investigate the order of the universe, and had achieved triumphs of design in mechanical constructions, human life was falling into ever wilder chaos. Why was this? The fact that most of my contemporaries were apparently quite unaware of the problem that stirred me so deeply could not weaken my sense of its reality. This slumber of so many souls in face of the vital questions of modern life seemed to me merely a further symptom of the sickness of our age. Nor could I think much better of those who, more sensitive to the contradictions in and around them, sought refuge in art or religion. The catastrophe of the war had shown me that this departmentalizing of life, which at one time I had myself considered a sort of ideal, was quite inconsistent with the needs of to-day. To make use of art or religion as a refuge was a sign of their increasing separation from the rest of human culture. It implied a cleavage between the different spheres of society which ruled out any genuine solution of social problems. I knew from history that religion and art had once exercised a function which is to-day reserved for science, for they had given guidance in even the most practical activities of human society. And in so doing they had enhanced the quality of human living, whereas the influence of science has had just the opposite effect. This power of guidance, however, they had long since lost, and in view of this fact I came to the conclusion that salvation must be looked for in the first place from science. Here, in the thinking and knowing of man, was the root of modern troubles; here must come a drastic revision, and here, if possible, a completely new direction must be found.