Van Dyck was an avid self-portraitist throughout his career... In the earliest of these, executed about 1613–15, an adolescent Van Dyck turns his head to study his own likeness. His piercing stare and the boldness of his brushwork presaged a career that would prove seminal for the history of European painting. [http://arthistorynewsreport.blogspot.nl/2016/03/van-dyck-anatomy-of-portraiture-frick.html]