Imagination, on the other hand, is the inventive faculty in art, poetry and even science. No great discovery, says the author, can be made even in the mathematics, without imagination. This assertion may strike us as strange; but we must remember that Leibnitz declared he was led to his great mathematical discoveries by the aid of metaphysics; and that imagination necessarily enters into the composition of a great metaphysical genius, few will be disposed to question. Here, however, if I may be allowed to offer an opinion, Schlegel does not appear to me to have traced, with sufficient distinctness, the boundaries between imagination and understanding. Understanding is the faculty of apprehension--it penetrates into the inward essence of things, and discerns the manifestations of the divine or human mind in their several revelations and communications.--Thus the naturalist, whose eye searches into the inward life of nature--the statesman, who can fathom the most deep-laid plans of a hostile policy--the theologian, who can discover the most hidden sense of Scripture, may be said to possess in an eminent degree, the faculty of understanding. Will is the other faculty implanted in the mind of man--the faculty on whose good or evil direction that of all the other faculties of mind and soul essentially depends. Independently of the moral direction of the will, its innate strength or weakness, its steadiness or vacillation, proportionably augment or diminish the power of all the other faculties. How far moderate abilities, when directed by a firm, tenacious, perseverant will can avail--to what a degree of success they may sometimes lead, daily experience may serve to convince us.