This study, The Philosopher's Stone, is the English version, revised and enriched, of my previous book published in France in 2005, whose title is The Gold of the Sages. By immersing myself in the study of alchemy, without prejudice, I wanted to restore some order on a scientific and historical level.

I claim to unveil the practical aspects intentionally left by the adepts in trying to rationalize esoteric teaching through a modern light. The study proposed to you is the fruit of forty years of studies and investigations with a complete scientific approach that no one has ever achieved to date.

Forty years of browsing esoteric bookstores and libraries in order to discover the rarest manuscripts and works dealing with what we have always considered chimerical: the search for the Philosopher's Stone, the transmutation of lead into gold!This unusual research required learning without a teacher an abstruse language, the hermetic cabala, the language of birds, the diplomatic language or even slang, as well as the deciphering of the symbolism of hieroglyphic figures, paintings and sculptures that often found on monuments belonging to adeptes. This study covered more than 200 books and my training as a chemical engineer was of great help in eliminating the bad authors in order to retain only the true initiates or researchers who had worked on canonical materials.

This research was conducted as a police investigation. It was necessary to choose a limited number of good authors to avoid wasting precious time, to do countless cross-checks to finally discover the operating methods, the correct order of the phases and the way in which the materials are transformed throughout the process.

I was fortunate to be able to participate in several experiments on dew as well as on metalurgical operations for the production of antimony by reaction of iron with stibnite. I am a scientist and I have no scruples about popularizing the knowledge that I have been able to accumulate after forty years of investigation;I am therefore very happy to share my humble experience with you, curious perhaps, or an art lover.

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