"Listen; you are one of those men who attempt to stifle their own imagination. But in all completed intellect, imagination exists, and will force its way; deny it healthful vents, and it may stray into morbid channels. The death-room of Dr. Lloyd deeply impressed your heart, far more than your pride would own. This is clear from the pains you took to exonerate your conscience, in your generosity to the orphans. As the heart was moved, so was the imagination stirred; and, unaware to yourself, prepared for much that subsequently appealed to it. Your sudden love, conceived in the very grounds of the house so associated with recollections in themselves strange and romantic; the peculiar temperament and nature of the girl to whom your love was attracted; her own visionary beliefs, and the keen anxiety which infused into your love a deeper poetry of sentiment,--all insensibly tended to induce the imagination to dwell on the Wonderful; and, in overstriving to reconcile each rarer phenomenon to the most positive laws of Nature, your very intellect could discover no solution but in the Preternatural. "You visit a man who tells you he has seen Sir Philip Derval's ghost; on that very evening, you hear a strange story, in which Sir Philip's name is mixed up with a tale of murder, implicating two mysterious pretenders to magic,--Louis Grayle and the Sage of Aleppo. The tale so interests your fancy that even the glaring impossibility of a not unimportant part of it escapes your notice,--namely, the account of a criminal trial in which the circumstantial evidence was more easily attainable than in all the rest of the narrative, but which could not legally have taken place as told. Thus it is whenever the mind begins, unconsciously, to admit the shadow of the Supernatural; the Obvious is lost to the eye that plunges its gaze into the Obscure. Almost immediately afterwards you become acquainted with a young stranger, whose traits of character interest and perplex, attract yet revolt you. All this time you are engaged in a physiological work which severely tasks the brain, and in which you examine the intricate question of soul distinct from mind. "And, here, I can conceive a cause deep-hid amongst what metaphysicians would call latent associations, for a train of thought which disposed you to accept the fantastic impressions afterwards made on you by the scene in the Museum and the visionary talk of Sir Philip Derval. Doubtless, when at college you first studied metaphysical speculation you would have glanced over Beattie's 'Essay on Truth' as one of the works written in opposition to your favourite, David Hume." "Yes, I read the book, but I have long since forgotten its arguments."