No less was De Quincey _psychologically_ preconformed to opium. The prodigious mental activity so early awakened in him counteracted the narcotic despotism of the drug, and made it a sort of ally. The reader sees from this how much depends upon predispositions as to the effect of opium. De Quincey himself says that the man whose daily talk is of oxen will pursue his bovine speculations into dreams. Opium originates nothing; but, given activity of a certain type and moving in a certain direction, and there will be perhaps through opium a multiplication of energies and velocities. What was De Quincey _without_ opium? is, therefore, the question preliminary to any proper estimate as to what in him was due to opium. This question has already been answered in the remarks made concerning his childhood. His meditative tendencies were especially noticed as most characteristic. There was besides this a natural leaning toward the mysterious,--the mysterious, I mean, as depending, not upon the terrible or ghostly, or upon anything which excites gloom or fear, but upon operations that are simply inscrutable as moving in darkness. Take, for example, the idea of a grand combination of human energies mustered together in secret, and operating through invisible agencies for the downfall of Christianity,--an idea which was conveyed to De Quincey in his childhood through the Abbé Baruel's book exposing such a general conspiracy was existing throughout Europe: this was the sort of mystery which arrested and engrossed his thoughts. Similar elements invested all secret societies with an awful grandeur in his conception. So, too, the complicated operations of great cities such as London, which he call the "Nation of London," where even Nature is mimicked, both in her strict regularity of results, and in the seeming unconsciousness of all her outward phases, hiding all meaning under the enigmas that defy solution. In order to this effect it was absolutely necessary that there should be not simply one mystery standing alone by itself, and striking in its portentous significance; there must have been more than this,--namely, a network of occult influences, a vast organization, wheeling in and out upon itself, gyrating in mystic cycles and epicycles, repeating over and again its dark omens, and displaying its insignia in a never-ending variety of shapes. To him intricacy the most perplexing was also the most inviting. It was this which lent an overwhelming interest to certain problems of history that presented the most labyrinthian mazes to be disinvolved: for the demon that was in him sought after hieroglyphics that by all others had been pronounced undecipherable; and not unfrequently it was to his eye that for the first time there seemed to be an unknown element that must be supplied. Such a problem was presented by the religious sect among the Hebrews entitled the _Essenes_. Admitting the character