For me, accordingly, the concept of evolution, when thought through to the end, began to suggest the possibility of further growth in man's spiritual capacities. But I saw also that this growth could no longer be merely passive, and the question which now beset me was: by what action of his own can man break his way into this new phase of evolution? I saw that this action must not consist merely in giving outer effect to the natural powers of human thinking; that was happening everywhere in the disordered world around me. The necessary action must have inner effects; indeed, it had to be one whereby the will was turned upon the thinking-powers themselves, entirely transforming them, and so removing the discrepancy between the thinker and the doer in modern man.