The reason why the views of most persons concerning this relation are so vague and indistinct is, that they do not possess a sufficiently clear and perfect analysis of the human mind. The powers and susceptibilities of the mind, as well as the laws which govern its phenomena, seem blended together in their minds in one confused mass; and hence the relations they bear to each other, and to the divine agency, are as dim and fluctuating as an ill-remembered dream. In this confusion of laws and phenomena, of powers and susceptibilities, of facts and fancies, it is no wonder that so many crude conceptions and vague hypotheses have sprung up and prevailed concerning the great difficulty under consideration. In the dim twilight of mental science, which has shown all things distorted and nothing in its true proportions, it is no wonder that the beautiful order and perspective of the moral world should have been concealed from our eyes. It was to have been expected, that every attempt to delineate this order, would, under such circumstances, prove premature, and aggravate rather than lessen the apparent disorders prevailing in the spiritual world. Accordingly, such attempts generally terminate, either in the denial of the free-agency of man, or of the sovereignty of God; and those who have maintained both of these tenets in reality, as well as in name, have usually refused to allow themselves to be troubled by the apparent contradictions in which they are involved. While they recognise the two spheres of the human and of the divine agency, they have left them so shadowy and indistinct, and so distorted from their real proportions, that they have inevitably seemed to clash with each other. Hence, to describe these two spheres with clearness and precision, and to determine the precise point at which they come into contact without intersecting each other, is still a desideratum in the science of theology. We shall endeavour to define the human power and the divine sovereignty, and to exhibit the harmony subsisting between them, in such a manner as to supply, in some small degree at least, this great _desideratum_ which has so long been the reproach of the most sublime of all the sciences.