Other things are probably better off left alone. Like a dead mouse at the back of a cupboard.
The quote suggests that some issues or problems are best left untouched, as interference might cause more harm than good. It emphasizes the idea that not everything is worth addressing, especially if the problem is minor or unlikely to be resolved positively. Sometimes, avoiding certain situations can be the wiser choice to preserve peace or prevent complications. In the context of the book The Boy in the Striped Pajamas, this quote...