Further, it is a theory that cannot account for the facts--viz. for the existence of the universal sense of responsibility; and the application to human action of moral blame and praise, which penetrates the whole of thought and language, and which holds too large a place in human life to be a delusion. We are not ashamed of a physical accident, but we are ashamed of telling a lie. And this difference is fundamental and based on reality. (2) The Christian assumption may be stated as follows: granted that we cannot increase the sum of force which passes from external sources into our system, and passes out again in manifold forms of human action, yet within certain limits we can direct it for good or evil--i.e. the 'voluntary' part of a man's action may be determined from below, so to speak, by purely animal motives, or by rational and spiritual motives. In the latter case, the action is of the proper human quality, and stamps a rational and spiritual character upon all that falls within its range. In the former case, it may be truly regarded as a survival of the physical instincts of animal progenitors, and no doubt it emerges as a part of the physical order of the world. But, considered as human action, it represents a lapse, a culpable subordination of the higher to the lower in our nature, a violation of the law proper to manhood[5]. This is the point. St. John says, 'All sin is lawlessness,' and (by the exact form of expression which he uses) he implies also that all lawlessness is sin. Here, and here only where voluntary action begins, do you see violation of law, and therefore, within limits, a disturbance of the divine order--something which ought to have been otherwise. {225} (3) The belief that the moral evil of our nature does not properly belong to our nature but is its violation, and that if once the will be set right it can be remedied, has been the secret of the moral strength of Christianity. Christianity has said to all men, However corrupted your nature, the corruption does not essentially belong to you. Give your wills to God, and, if slowly, yet surely, if not fully in this world, then beyond it, all can be set right. 'According to thy faith be it unto thee.' And the practical power of this appeal, shows its agreement with reality. (4) On the other hand, it cannot be claimed that the theory is contrary to any real scientific _knowledge_; for biology confesses that it knows very little as to the actual methods by which force is redistributed in human action. It is contrary only to some large and unverifiable assumptions--assumptions which ignore the abstract character of biological psychology, as of other sciences.