"In much that you tell me I recognize myself; in much I am as lost in amazement as you in wild doubt or fierce wrath. Of the effect that you say Philip Derval produced on me I have no recollection. Of himself I have only this,--that he was my foe, that he came to England intent on schemes to shorten my life or destroy its enjoyments. All my faculties tend to self-preservation; there, they converge as rays in a focus; in that focus they illume and--they burn. I willed to destroy my intended destroyer. Did my will enforce itself on the agent to which it was guided? Likely enough. Be it so. Would you blame me for slaying the tiger or serpent--not by the naked hand, but by weapons that arm it? But what could tiger and serpent do more against me than the man who would rob me of life? He had his arts for assault, I had mine for self-defence. He was to me as the tiger that creeps through the jungle, or the serpent uncoiling his folds for the spring. Death to those whose life is destruction to mine, be they serpent or tiger or man! Derval perished. Yes! the spot in which the maniac had buried the casket was revealed to me--no matter how; the contents of the casket passed into my hands. I coveted that possession because I believed that Derval had learned from Haroun of Aleppo the secret by which the elixir of life is prepared, and I supposed that some stores of the essence would be found in his casket. I was deceived--not a drop! What I there found I knew not how to use or apply, nor did I care to learn. What I sought was not there. You see a luminous shadow of myself; it haunts, it accosts, it compels you. Of this I know nothing. Was it the emanation of my intense will really producing this spectre of myself, or was it the thing of your own imagination,--an imagination which my will impressed and subjugated? I know not. At the hours when my shadow, real or supposed, was with you, my senses would have been locked in sleep. It is true, however, that I intensely desire to learn from races always near to man, but concealed from his every-day vision, the secret that I believed Philip Derval had carried with him to the tomb; and from some cause or another I cannot now of myself alone, as I could years ago, subject those races to my command,--I must, in that, act through or with the mind of another. It is true that I sought to impress upon your waking thoughts the images of the circle, the powers of the wand, which, in your trance or sleep-walking, made you the involuntary agent of my will. I knew by a dream--for by dreams, more or less vivid, are the results of my waking will sometimes divulged to myself--that the spell had been broken, the discovery I sought not effected. All my hopes were then transferred from yourself, the dull votary of science, to the girl whom I charmed to my thraldom through her love for you and through her dreams of a realm which the science of schools never enters.