Those who repeat _ad nauseam_ the absurd stories of his alchemy generally omit to mention his genuine discoveries and to tell of the wide scope of his teaching. That he used mercury and opium for healing purposes at a time when they were condemned; that he did all he could to stop the practice of administering the vile electuaries of the mediæval pharmacopœia; that he was one of the first to use laudanum; that he perpetually held--to his own detriment--that medical science should not be secret; that he blamed strongly the fashion of his time of accounting for natural phenomena by the intervention of spirits or occult forces; that he deprecated astrology; that he insisted on the proper investigation of the properties of drugs and that they should be used more simply and in smaller doses. To these benefits and reforms his enemies answered that he had made a pact with the devil. For reward of his labours, his genius, his fearless struggle for human good he had--with the exception of a few spells of prosperity--only penury, want, malicious ill-fame and ceaseless attacks by the professors of religion and science. He was an original investigator of open mind, of great ability and application, and absolutely fearless. He was centuries ahead of his time. We can all feel grateful to that French writer who said: “Tels sont les services eminents que Paracelse a rendu à l’humanité souffrante, pour laquelle il montra toujours le dévouement le plus désintéressé; s’il en fut mal recompensé pendant sa vie que sa mémoire au moins soit honorée.” CAGLIOSTRO