Summary
This quote suggests that pictures often do more harm to the walls they are hung on, rather than enhancing their appearance. It highlights the possibility of pictures leaving marks or causing damage to the walls, perhaps due to nails or adhesives used for hanging. Furthermore, it implies that pictures may not always match the overall aesthetic or style of the walls, thereby disrupting the intended design. Ultimately, it implies that pictures are more likely to blemish walls than beautify them.