The enigmatic 16th-century Swiss physician and natural philosopher Philippus Aureolus Theophrastus Bombastus von Hohenheim, called Paracelsus, is known for the almost superhuman energy with which he produced his innumerable writings, for his remarkable achievements in the development of science and for his reputation as a visionary (not to mention sorceror) and alchemist. Little is known of his biography beyond his legendary achievements and the details of his life have been filled in over the centuries by his admirers. This anthology presents in modern language a selection of the moral thought of a man who was not only a self-willed genius charged with the dynamism of an impetuous and turbulent age, but also in many ways a humble seeker after truth, who deeply influenced Jung and his followers.