[The therapeutics of Paracelsus with reference to natural philosophy, alchemy and psychology]

Abstract: The controversial reception of Paracelsus is still going on. The crucial question is whether he is a man of the Middle Ages or of modern times. It is not possible to give a simple answer. We have to study the writings of Paracelsus within the scientific and cultural context of the Renaissance. This period is characterized by a new concept of natural philosophy. The theory of signature tries to read or translate certain constellations within the natural environment as a secret code. The idea of a sympathetic correspondence between natural bodies or substances implies the possibility of magical healing. A wellknown example is the preparation of the 'weapon salve'. There are two realities of spiritual powers at the same time: demons from the outside of the human body and powers of the mind from its inside which influence the body functions. The natural philosophy of the Renaissance tries to 'naturalize' the demons as a complement of matter. Paracelsus reflects the ideas of his time. The human being has got two bodies: a visible one which belongs to earth and an invisible one which belongs to heaven. The 'philosopher' as a pharmacist and a doctor has to detect the invisible body corresponding with the celestial world (stars, planets) by analysing the manifest astrological signs. The alchemical preparation of remedies has to purify the specific healing substances ('arcana') from the crude material. The pharmacist and doctor just imitates artificially the quasi alchemical metabolic process of nature itself continuing and finishing it. Paracelsus' concept of imagination ('imaginatio') implies a psychosomatic model how far spiritual powers can influence the body functions. Paracelsus stresses radically the importance of suggestions as a source of illness. The synchronical concepts are confusing today. Knowledge and superstition, scientific rationality and irrational speculations come together and can hardly be separated. Nevertheless, at the end of the 20th century we may have more mental relations to this scenario than we are able to realize it at the moment.

Keyword(s): History of Medicine, 15th Cent.

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