An omniscient virtuoso gestures boastfully at all the knowledge that lies available to him. Etching by G.M. Mitelli, c. 1700.

Licence: Public Domain Mark

Credit: An omniscient virtuoso gestures boastfully at all the knowledge that lies available to him. Etching by G.M. Mitelli, c. 1700. Wellcome Collection. Source: Wellcome Collection.