What is the quote An Englishmans house is castle means?

The quote "An Englishman's house is his castle" means that a person's home is a place of safety and security, where they have the right to privacy and protection from intrusion. It emphasizes the importance of personal space and autonomy, suggesting that individuals should feel in control of their own dwelling. This idea reflects broader themes of individual rights and the sanctity of one's personal domain.