Crime may be regarded both objectively and also subjectively, i.e., as regards the deed itself and as regards the doer of the deed. In the past it was customary to consider the crime only and to punish the doer, or the criminal, according to the enormity of his deed. Scientific methods require, however, that we should study the criminal and ask ourselves "what is he?" and "of what forces is he the product?" If these questions can be satisfactorily answered, then society is better enabled to arm herself against his invasion, in fact having successfully diagnosed his case she may be led on to discover the means whereby criminals may be reduced to their irreducible minimum, both as regards number and as regards their capacity for doing harm. Man has two natures, the animal and the spiritual. The animal is the passive product of Nature, the forces of his development being guided and restricted by the condition of the life in which he is born and reared. To this animal nature belongs the natural appetites, passions, faculties and senses. This nature is not sufficient in itself, and its realisation cannot be accomplished until it is brought into complete subordination to the higher or spiritual nature. The function of this spiritual nature is to subordinate the animal nature by harmonising and controlling it, and it finds its partial realisation in the institutions of family, church and state; and its ultimate realisation in the heavenly counterparts of these. Thus subordinating the animal nature, it develops the powers of man's natural inheritance along their true line of advance and brings him steadily nearer the goal of perfect manhood. When, however, the spiritual influence is not exercised and man resigns himself to the uncontrolled influences which spring from his lower nature, he rapidly degenerates. Socially, this degeneracy is noticed by its process of gradually loosening, and finally severing the ties which bind man to his race. He becomes an unsocial being and ceases to contribute to the wealth, peace or establishment of society. His desire for society is regulated by his capacity to draw from it the satisfaction of the abnormal appetite of unregulated passion. In this mood he totally disregards the laws of society and seizes every opportunity that presents itself to prey upon it and he thus becomes an anti-social being. Through all ages up to the present, society has at the cost of much effort and suffering been progressing, stage by stage, towards a higher order. Each advance purchased at such a price, becomes a free gift, by inheritance, to the next generation, and from this inheritance still further progress may be made. It is quite possible that in a dissolute age retrogression may set in and the ground be lost, in which case its recovery becomes the arduous task of a succeeding regenerate age.