The fashioning spirit, working upwards from the clod to man, proffers as its last, highest essay, the brain of man. In the lowest zoophyte it aimed at this; some faint rudiments may there be discerned: but only in man has it perfected that immense galvanic battery that can be loaded from above, below, and around;--that engine, not only of perception, but of conception and consecutive thought,--whose right hand is memory, whose life is idea, the crown of nature, the platform from which spirit takes-wing.

Yet, as gradation is the beautiful secret of nature, and the fashioning spirit, which loves to develop and transcend, loves no less to moderate, to modulate, and harmonize, it did not mean by thus drawing man onward to the next state of existence, to destroy his fitness for this. It did not mean to destroy his sympathies with the mineral, vegetable, and animal realms, of whose components he is in great part composed; which were the preface to his being, of whom he is to take count, whom he should govern as a reasoning head of a perfectly arranged body. He was meant to be the historian, the philosopher, the poet, the king of this world, no less than the prophet of the next.

Summer on the Lakes, in 1843 — Part 92

These functions should be in equipoise, and when they are not, when we see excess either on the natural (so called as distinguished from the spiritual,) or the spiritual side, we feel that the law is transgressed. And, if it be the greatest sorrow to see brain merged in body, to see a man more hands or feet than head, so that we feel he might, with propriety, be on all fours again, or even crawl like the serpent; it is also sad to see the brain, too much excited on some one side, which we call madness, or even unduly and prematurely, so as to destroy in its bloom, the common human existence of the person, as in the case before us, and others of the poetical and prophetical existence.

Summer on the Lakes, in 1843 — Part 92

We would rather minds should foresee less and see more surely, that death should ensue by gentler gradation, and the brain be the governor and interpreter, rather than the destroyer, of the animal life. But, in cases like this, where the animal life is prematurely broken up, and the brain prematurely exercised, we may as well learn what we can from it, and believe that the glimpses thus caught, if not as precious as the full view, are bright with the same light, and open to the same scene.

Summer on the Lakes, in 1843 — Part 92