"heart of stone" Tanımı ve Anlamı

What is the origin of the idiom "heart of stone" and when to use it?

The idiom "heart of stone" originates from the idea that a heart, as the symbol of emotion and compassion, should be warm and soft, but when described as "of stone," it signifies a person's lack of empathy, compassion, or emotional responsiveness. It is used to imply that someone is emotionally cold, unfeeling, or indifferent.