The second point is really a historical one. Psychiatrists are often asked, "Was Joan of Arc crazy?" "Was Saint Louis a dementia praecox?" In an endeavor to answer such questions wise books have been written detailing the "psychoses" of historic or religious leaders. There is probably not a single delusion expressed by any one of the patients whose cases have just been recited that is not duplicated or paralleled by the belief of savants of a few centuries ago or the uneducated of to-day. The last patient said "All nature is artificial, man made it all. All the world would disappear, if man lost the power of reproducing. The reproduction of nature by man is founded on faith--constant reiteration and association with a thing will produce that thing." Is this not analogous to the working hypothesis of the alchemists? The more sincere among them sought salvation for their souls. To gain this they worked with metals to which they ascribed abstract or moral qualities. Their metallurgy was primarily symbolic, yet they seriously hoped for results by working with symbols. And to what extent of absurdity and crudity did they go? Many of their metallurgic terms were sexual processes. Their "prima materia" was called by the name of many of the secretions or excretions of the body. A whole school--the Seminalists--adhered to the view that the great original substance was semen. Other thought it was hermaphroditic. Paraceleus spoke of the birth of monsters as a result of sodomy. A natural history[4] written three centuries ago tells of semen being carried by wind. Notoriously there was no limit either to the absurdity or crudity of these conceptions. Were these men--the wisest of their time--insane? Here again we may quote the last patient--"Insanity," he says, "is the elemental human mind left to itself, unimproved by other minds." The last is the important phrase. What minds were there to improve those of the alchemists? What critic was there to tell Joan of Arc that visions and voices were pathological? That was the regulation form of inspiration in her day. Comparative mythology like a comparison of mysticism, alchemy, rosicrucianism and masonry shows that the human mind left to itself will formulate similar ideas. These ideas, however, are modified by the advance of learning as time goes on. The individual whose critical faculty allows him to maintain an idea incompatible with the knowledge of his age and his fellows is insane. [4] The Historie of Foure-Footed Beastes, by Edward Topsell, London, 1607.