"The shadows cast in the house by sun shining inside are like those out of doors, except that they appear stronger and are more defined by a window or a door. Albrecht Dürer really enjoyed sun shining into a room in his 'Hieronymus in the Room' [https://www.Rijksmuseum.nl/nl/collectie/RP-P-OB-1224.. .Our own Rembrandt concerned himself in an amazing way with sunlight reflections. It seems as though he is really in his element when reflecting any light whatsoever. If only he had understood the basic rules of this art a little better. Because those who only trust their own eyes and delusional experiences, often make mistakes that earn the derisive remarks from pupils, not to mention the masters."