The most remarkable feature of these illusions was, that at the time when I was most completely under their influence, I knew myself to be seated in the tower of Antonio's hotel in Damascus, knew that I had taken hasheesh, and that the strange, gorgeous and ludicrous fancies which possessed me, were the effect of it. At the very same instant that I looked upon the Valley of the Nile from the pyramid, slid over the Desert, or created my marvellous wells in that beautiful pastoral country, I saw the furniture of my room, its mosaic pavement, the quaint Saracenic niches in the walls, the painted and gilded beams of the ceiling, and the couch in the recess before me, with my two companions watching me. Both sensations were simultaneous, and equally palpable. While I was most given up to the magnificent delusion, I saw its cause and felt its absurdity most clearly. Metaphysicians say that the mind is incapable of performing two operations at the same time, and may attempt to explain this phenomenon by supposing a rapid and incessant vibration of the perceptions between the two states. This explanation, however, is not satisfactory to me; for not more clearly does a skilful musician with the same breath blow two distinct musical notes from a bugle, than I was conscious of two distinct conditions of being in the same moment. Yet, singular as it may seem, neither conflicted with the other. My enjoyment of the visions was complete and absolute, undisturbed by the faintest doubt of their reality, while, in some other chamber of my brain, Reason sat coolly watching them, and heaping the liveliest ridicule on their fantastic features. One set of nerves was thrilled with the bliss of the gods, while another was convulsed with unquenchable laughter at that very bliss. My highest ecstacies could not bear down and silence the weight of my ridicule, which, in its turn, was powerless to prevent me from running into other and more gorgeous absurdities. I was double, not "swan and shadow," but rather, Sphinx-like, human and beast. A true Sphinx, I was a riddle and a mystery to myself.