But no matter how much men in authority have turned moral rules into an agency of class supremacy, any theory which attributes the origin of rule to deliberate design is false. To take advantage of conditions after they have come into existence is one thing; to create them for the sake of an advantage to accrue is quite another thing. We must go back to the bare fact of social division into superior and inferior. To say that accident produced social conditions is to perceive they were not produced by intelligence. Lack of understanding of human nature is the primary cause of disregard for it. Lack of insight always ends in despising or else unreasoned admiration. When men had no scientific knowledge of physical nature they either passively submitted to it or sought to control it magically. What cannot be understood cannot be managed intelligently. It has to be forced into subjection from without. The opaqueness of human nature to reason is equivalent to a belief in its intrinsic irregularity. Hence a decline in the authority of social oligarchy was accompanied by a rise of scientific interest in human nature. This means that the make-up and working of human forces afford a basis for moral ideas and ideals. Our science of human nature in comparison with physical sciences is rudimentary, and morals which are concerned with the health, efficiency and happiness of a development of human nature are correspondingly elementary. These pages are a discussion of some phases of the ethical change involved in positive respect for human nature when the latter is associated with scientific knowledge. We may anticipate the general nature of this change through considering the evils which have resulted from severing morals from the actualities of human physiology and psychology. There is a pathology of goodness as well as of evil; that is, of that sort of goodness which is nurtured by this separation. The badness of good people, for the most part recorded only in fiction, is the revenge taken by human nature for the injuries heaped upon it in the name of morality. In the first place, morals cut off from positive roots in man's nature is bound to be mainly negative. Practical emphasis falls upon avoidance, escape of evil, upon not doing things, observing prohibitions. Negative morals assume as many forms as there are types of temperament subject to it. Its commonest form is the protective coloration of a neutral respectability, an insipidity of character. For one man who thanks God that he is not as other men there are a thousand to offer thanks that they are as other men, sufficiently as others are to escape attention. Absence of social blame is the usual mark of goodness for it shows that evil has been avoided. Blame is most readily averted by being so much like everybody else that one passes unnoticed. Conventional morality is a drab morality, in which the only fatal thing is to be conspicuous. If there