They will never let a man alone,--they, the herd, who cry "Madman!" when any worker and his work which they cannot comprehend rise before them. In the great moment when, after years of climbing, I stood victorious on the summit, they claimed that I had fallen to the chasm's depths, and confined me here at Staunton as a hopeless lunatic. This heart of mine, burning with the grandest discovery ever made, must throb itself away in a cell, because it could not contain its high knowledge, but went forth among men once more to mingle ideal rays with their sunshine, and make every wind, as it passed over the earth, waft a higher secret than was ever before attained. A lunatic! I! But next me in array are the prisons of the only sane ones of history, the cells dug by Inquisitorial Ignorance in every age for its wisest men. Now I understand them; walls cannot impede the hands we stretch out to each other across oceans and centuries. One day the purblind world will invoke in its prayers the holy army of the martyrs of Thought. Yes, I was mad,--mad to think that the world's horny eyes could not receive the severe light of knowledge,--mad as was he who ran through the streets and cried, "_Eureka!_" The head and front of my madness have this extent,--no more. And for this I must write the rest of my story here amid iron gratings, through which, however, thank God, my familiars, the stars, and the red, blue, and golden planets, glance kindly, saying, "Courage, brother! soon thou shaft rise to us, to whom thou belongest!" Yet I will write it: one day men will read, and say, "Come, let us garnish the sepulchre of one immured because his stupid age could not understand!" and then, doubtless, they will go forth to stone the seer on whose tongue lies the noblest secret of the Universe for that day. When I left the last experiment mentioned in these pages, in order to recover steadiness of brain and nerve, and to relieve my overtaxed eyes, I had no hope of reaching success in any other way than that pointed out in the principle which I was pressing,--a principle whose importance is proved in the familiar experiments on stereoscopic views, whereby things entirely invisible to the naked eye are disclosed by lenses. But that night I dreamed out the success which had eluded my waking hours. I have nothing to say here about the phenomenon of dreaming: I state only the fact. In my dream there appeared to me my father, bearing in his left hand a plate of glass, and in his right a phial of bright blue liquid which he seemed to be pouring on the polished surface. The phial was of singular shape, having a long slender neck rising from a round globe. When I awoke, I found myself standing in the middle of the floor with hands stretched out appealingly to the vacant air.