The Hermetic and Alchemical Writings

Paracelsus, born in Einsiedeln, Switzerland, was an alchemist, physician, astrologer, and general occultist. Born Phillip von Hohenheim, he later took up the name Philippus Theophrastus Aureolus Bombastus von Hohenheim, and still later took the title Paracelsus, meaning "equal to or greater than Celsus", a Roman encyclopedist from the first century known for his tract on medicine.
A discussion of the life and teachings of Paracelsus, considered the outstanding medical therapist of his time and greatest mystic in the history of Western medicine. His lifelong devotion to research in the healing arts is told, and how he associated himself with all branches of folk medicine, exploring the fields of animal magnetism, alchemy, astrology, and cabalism.

Paracelsus wrote many tracts on alchemy, mostly dealing with the nature of the so-called Philosopher's Stone. Sadly, Paracelsus died an early, violent death at the hands of those who were jealous of his supieror knowledge and annoyed by his arrogant attitude.
Coelum philosophorum by Paracelsus, The Book Concerning The Tincture Of The Philosophers by Paracelsus, The Treasure of Treasures for Alchemists by Paracelsus, The Aurora of the Philosophers by Paracelsus, Alchemical Catechism