First general phase within the mind. First special phase, in the Sense. "As pure form in the primitive intuition, they are wholly limitless, and void of any conjunction in unity, having themselves no figure nor period, and having within themselves no figure nor period, but only pure diversity, in which any possible conjunction of definite figures and periods may, in some way, be effected." In other words, they are pure, _a priori_, formal laws, which are conditional to the being of any sense as the perceiver of a phenomenon; and yet this sense could present no figure or period, till some figure or period was produced into it by an external agency. As such necessary formal laws, Space and Time "have a necessity of being independently of all phenomena." Or, in other words, the fact that all phenomena _must_ appear in them, lies beyond the province of power. This, however, is no more a limit to the Deity than it is a limit to him that he cannot hate his creatures and be good. In our experience the Sense gives two kinds of phenomena: the one the actual phenomena of actual objects, the other, ideal phenomena with ideal objects. The one is awakened by the presentation, in the physical sense, of a material object, as a house; the other, by the activity of the imaging faculty, engaged in constructing some form in the inner or mental sense, from forms actually observed. Upon both alike the formal law of Space and Time must lie. Second special phase, in the Understanding. Although there is pure form, if there was no more than this, no notion of a system of things could be. Each object would have its own space, and each event its own time. But one object and event could not be seen in any relation to another object and event. In order that this shall be, there must be some ground by which all the spaces and times of phenomena shall be joined into a unity of Space and Time; so that all objects shall be seen in one Space, and all events in one Time. "A notional connective for the phenomena may determine these phenomena in their places and periods in the whole of all space and of all time, and so may give both the phenomena and their space and time in an objective experience." The operation of the Understanding is, then, the connection, by a notional, of all particular spaces and times; _i. e._ the space and time of each phenomenon in the Sense, into a comprehensive unity of Space and Time, in which all phenomena can be seen to occur; and thus a system can be. In a word, not only must each phenomenon be seen in its own space and time, but all phenomena must be seen in _one_ Space and Time. This connection of the manifold into unity is the peculiar work of the Understanding. An examination of the facts as above set forth enables us to construct a general formula for the application to all minds of the fundamental law given by the Reason. That law, that all objects must be seen in Space, and all events in Time, involves the subordinate law: