The Coelum Philosophorum

Attributed to Paracelsus, The Coelum Philosophorum is a concise exposition of alchemical principles framed within Paracelsian natural philosophy. It is historically important as part of Paracelsus’s reform of medicine and natural science, and readers will find discussions of substances, processes, and the spiritualized view of nature characteristic of his work.

Paracelsus (c. 1493–1541) was a Swiss physician, natural philosopher, and alchemist whose writings linked medicine, cosmology, and spiritual speculation. He was highly influential in the development of occult natural philosophy and later esoteric traditions.