This adventurer was of a higher grade than the last, and played a distinguished part at the court of Louis XV. He pretended to have discovered the elixir of life, by means of which he could make any one live for centuries; and allowed it to believed that his own age was upwards of two thousand years. He entertained many of the opinions of the Rosicrucians; boasted of his intercourse with sylphs and salamanders; and of his power of drawing diamonds from the earth, and pearls from the sea, by the force of his incantations. He did not lay claim to the merit of having discovered the philosopher's stone; but devoted so much of his time to the operations of alchymy, that it was very generally believed, that if such a thing as the philosopher's stone had ever existed, or could be called into existence, he was the man to succeed in finding it.
It has never yet been discovered what was his real name, or in what country he was born. Some believed, from the Jewish cast of his handsome countenance, that he was the "wandering Jew;" others asserted that he was the issue of an Arabian princess, and that his father was a salamander; while others, more reasonable, affirmed him to be the son of a Portuguese Jew established at Bourdeaux. He first carried on his imposture in Germany, where he made considerable sums by selling an elixir to arrest the progress of old age. The Maréchal de Belle-Isle purchased a dose of it; and was so captivated with the wit, learning, and good manners of the charlatan, and so convinced of the justice of his most preposterous pretensions, that he induced him to fix his residence in Paris. Under the marshal's patronage, he first appeared in the gay circles of that capital. Every one was delighted with the mysterious stranger; who, at this period of his life, appears to have been about seventy years of age, but did not look more than forty-five. His easy assurance imposed upon most people. His reading was extensive, and his memory extraordinarily tenacious of the slightest circumstances. His pretension to have lived for so many centuries naturally exposed him to some puzzling questions, as to the appearance, life, and conversation of the great men of former days; but he was never at a loss for an answer. Many who questioned him for the purpose of scoffing at him, refrained in perplexity, quite bewildered by his presence of mind, his ready replies, and his astonishing accuracy on every point mentioned in history. To increase the mystery by which he was surrounded, he permitted no person to know how he lived. He dressed in a style of the greatest magnificence; sported valuable diamonds in his hat, on his fingers, and in his shoe-buckles; and sometimes made the most costly presents to the ladies of the court. It was suspected by many that he was a spy, in the pay of the English ministry; but there never was a tittle of evidence to support the charge. The king looked upon him with marked favour, was often closeted with him for hours together, and would not suffer any body to speak disparagingly of him. Voltaire constantly turned him into ridicule; and, in one of his letters to the King of Prussia, mentions him as "un comte pour rire;" and states that he pretended to have dined with the holy fathers at the Council of Trent!