“A leopard can’t change its spots” is the notion that things cannot change their innate nature. A person cannot change who they are (their character), no matter how hard they try. This person’s character, especially if it is bad, will not change, even if they pretend it has.
“don’t judge a book by its cover” means: you shouldn’t prematurely form an opinion or prejudge (an issue or person) based purely on its initial appearance. You cannot judge the quality or character of someone or something simply by looking at that person or thing’s appearance because after taking a deeper look, the person or […]