Finds progress, man's distinctive mark alone, Not God's, and not the beast's; God is, they are, Man partly is, and wholly hopes to be.

In these years Browning was fascinated by and learned from the art and atmosphere of Italy. The subject of the 16th century savant and alchemist was probably suggested to him by the Comte Amédée de Ripart-Monclar to whom it was dedicated. Browning then wrote two other plays one of which was not performed while the other failed Browning having fallen out with Macready.