[Paracelsus at the horizon of medicine].

After a brief review of the life and work of Paracelsus (1493-1541) the five spheres of existence of the healthy as well as the sick individual are characterized (theory of the 5 entities). Founding on this theoretical orientation of existence Paracelsus constructs his "house of medicine" which is resting on 4 pillars: on "Philosophia" as natural and human science, on "Astronomia" as structured chronologic order, on "Alchimia" as science of the preparation of materials and on "Physica" providing the ethical prerequisite for medical practise. Paracelsus believes the physician to represent an educated expert applying standards to the other faculties as well; in his eyes medicine represents the "cornerstone of university".