A detail from an engraving of the scholar, priest and astronomer Pierre Gassendi by his collaborator the engraver and artist Claude Mellan. From the Met collection.
Image © 2000–2014 The Metropolitan Museum of Art
The maxim that our first duty is to do no harm — primum non nocere — is not intended to reduce us to the rank of simple spectators; it is to stimulate us to attain greater accuracy in diagnosis, greater skill in treatment, and quicker perception of indications.