Curiosity being thus canonized, it is remarkable that the Gnostic system had baits for almost every description of it. It is curiosity, the desire of knowing what others know, fully as much as passion and appetite, which leads men into the various descriptions of vice; and this species of curiosity was not only allowed, but even sanctioned and stimulated. Men were told that it was the express destiny of every one who was to be perfect, to know everything that could be known in this world; and not only that, but that if a person failed of acquiring the requisite knowledge in one lifetime, his soul must pass into another and another body, until it had arrived at the necessary degree of information. It is true that this implied, in its literal meaning, the knowledge of good as well as of evil. But it requires little acquaintance with human nature to tell us in what sense it would be most commonly taken. And if any scruples still remained, they were removed by the doctrine that all actions were naturally indifferent, and that nothing but human opinion, or the arbitrary will of a tyrannical being, the Jewish God, had ever made any such thing as moral distinctions. Thus a vicious curiosity became a _duty_, if such a term had been allowable in Gnosticism; or, at all events, that man who did not foster and indulge it to the utmost, was fighting against his own interest. There is another kind of curiosity, which has governed many in all ages, and which is not even yet extinct, and that is, a desire to be acquainted with future or unknown circumstances, or to possess a power beyond the reach of ordinary men. There have been always those who have professed themselves possessors of this supernatural knowledge, and of course others who have desired either to possess it or to witness and profit by its exercise. From this desire has arisen the whole of magic from the beginning, and the science of astrology in particular. Accordingly, this was a marked feature in many of the Gnostic teachers, that they laid claim to magical powers; and herein they differed from the heathen philosophers, and became the antagonists of the Christian apostles. Simon Magus, for instance, who is generally reckoned the first Gnostic leader, was a magician, and there is great reason to suspect that his faith was more a reliance on the Apostles, on the supposition of their having some deeper art than his own, than the faith of the heart in the principles of the Gospel.