Rubens was mesmerised by faces. He studied physiognomy, the
pseudo-science that began making headway in the sixteenth century, which
postulated that a person's character could be read from their facial
features. He made geometrical analyses of the faces of ancient emperors
and heroes. He invested a great deal of time in detailed anatomical
studies, sometimes based on nature, and equally often on antique busts
and coins. At times it seems as though the master wanted to know and
understand every nook and cranny of the human face. To this end he
studied man himself and the way in which the ancients dealt with nature.
His best portrait copies, thus, are not strictly copies but rather
studies in which art history, craftsmanship, literature and theory merge
into an emulation of art and nature. They are works in which the artist
was looking for what ultimately captivated him the most: man in all of
his myriad facets, and the perspectives art afforded to better
understand man.