caption: The image shows an old man with a white beard and a yellow robe, painted by Caravaggio, sitting in front of a wall. He appears to be in a contemplative pose, with his hands clasped together in prayer. His eyes are closed and his head is bowed, as if he is deep in thought. His clothing is simple and his expression is one of deep contemplation. The wall behind him is plain and unadorned, allowing the painting to be the focus of the image.