Caption: Democritus (c.460--c.370 BCE), the laughing philosopher: painter and model Rembrandt (1606--1669)---Rembrandt made nearly 100 self-portraits (see Wikipedia: Self-portraits by Rembrandt)---talk about Narcissism---but arguably this painting is only accidentally a self-portrait since Rembrandt was being a model.
Credit/Permission: Rembrandt (1606--1669)
(uploaded to Wikimedia Commons
Image link: Wikipedia: File:Rembrandt laughing 1628.jpg.
Local file: local link: democritus.html.
File: Ancient Astronomy file: democritus.html.