Paracelsus

(noun) Swiss physician who introduced treatments of particular illnesses based on his observation and experience; he saw illness as having an external cause (rather than an imbalance of humors) and replaced traditional remedies with chemical remedies (1493-1541). Synonyms: Philippus Aureolus Paracelsus, Theophrastus Philippus Aureolus Bombastus von Hohenheim.