Book excerpt: Greek Rational Medicine examines the important relationship between philosophy and medicine in ancient Greece and beyond and reveals its significance for contemporary western practice and theory.The ancient Greek medical thinkers were profoundly influenced by Ionian natural philosophy. This philosophy caused them to adopt a radically new attitude towards disease and healing. James Longrigg shows how their rational attitudes ultimately resulted in levels of sophistication largely unsurpassed until the Renaissance. He examines the important relationship between philosophy and medicine in ancient Greece and beyond, and reveals its significance for contemporary western practice and theory.