In considering insanity we must, as in other cases, anticipate the full-grown and intelligent conscious subject, which is at the same time the _natural_ self of _self-feeling_. In such a phase the self can be liable to the contradiction between its own free subjectivity and a particularity which, instead of being “idealised” in the former, remains as a fixed element in self-feeling. Mind as such is free, and therefore not susceptible of this malady. But in older metaphysics mind was treated as a soul, as a thing; and it is only as a thing, i.e. as something natural and existent, that it is liable to insanity—the settled fixture of some finite element in it. Insanity is therefore a psychical disease, i.e. a disease of body and mind alike: the commencement may appear to start from one more than other, and so also may the cure. The self-possessed and healthy subject has an active and present consciousness of the ordered whole of his individual world, into the system of which he subsumes each special content of sensation, idea, desire, inclination, &c., as it arises, so as to insert them in their proper place. He is the _dominant genius_ over these particularities. Between this and insanity the difference is like that between waking and dreaming: only that in insanity the dream falls within the waking limits, and so makes part of the actual self-feeling. Error and that sort of thing is a proposition consistently admitted to a place in the objective interconnexion of things. In the concrete, however, it is often difficult to say where it begins to become derangement. A violent, but groundless and senseless outburst of hatred, &c., may, in contrast to a presupposed higher self-possession and stability of character, make its victim seem to be beside himself with frenzy. But the main point in derangement is the contradiction which a feeling with a fixed corporeal embodiment sets up against the whole mass of adjustments forming the concrete consciousness. The mind which is in a condition of mere _being_, and where such being is not rendered fluid in its consciousness, is diseased. The contents which are set free in this reversion to mere nature are the self-seeking affections of the heart, such as vanity, pride, and the rest of the passions—fancies and hopes—merely personal love and hatred. When the influence of self-possession and of general principles, moral and theoretical, is relaxed, and ceases to keep the natural temper under lock and key, the earthly elements are set free—that evil which is always latent in the heart, because the heart as immediate is natural and selfish. It is the evil genius of man which gains the upper hand in insanity, but in distinction from and contrast to the better and more intelligent part, which is there also. Hence this state is mental derangement and distress. The right psychical treatment therefore keeps in view the truth that insanity is not an abstract _loss_ of reason (neither