Gian Paolo Lomazzo was an Italian artist and writer on art. Praised as a painter, Lomazzo wrote about artistic practice and art theory after blindness compelled him to pursue a different professional
Self-portrait
Madonna and Saints, Church of San Marco, Milan
Lomazzo depicted on a medal by Annibale Fontana
Humorism, the humoral theory, or humoralism, was a system of medicine detailing a supposed makeup and workings of the human body, adopted by Ancient Greek and Roman physicians and philosophers.
Gian Paolo Lomazzo
…included new details about British artists. Lomazzo's more abstract Idea del tempio della pittura ("The ideal temple of painting", 1590) describes the "four temperaments" theory of human nature and personality and contains explanations about of the role of individuality in judgment and artistic invention. Lomazzo's…
16th-century German illustration of the four humors: Flegmat (phlegm), Sanguin (blood), Coleric (yellow bile) and Melanc (black bile), divided between the male and female sexes
The four humors as depicted in an 18th-century woodcut: phlegmatic, choleric, sanguine and melancholic