The angel of melancholia among her scattered instruments and experiments---contemplating existence one supposes.

Credit/Permission: Albrecht Duerer (1471--1528), 1514 (uploaded to Wikipedia by Donar Reiskoffer (AKA User: Donarreiskoffer, 2007) / Public domain.
Image link: Wikipedia: File:Dürer Melancholia I.jpg.
Local file: local link: melancholia.html.
File: Art_m file: melancholia.html.