“See no evil, hear no evil, speak no evil” is a maxim originating from Japan, often represented by three monkeys covering their eyes, ears, and mouth. It emphasizes avoiding evil or negative things rather than becoming involved in them.
The phrase encourages mindfulness about what one sees, hears, and says, and avoiding harm to others. In some cultures, it is seen as protection from negative influences; in others, as a way to promote peace. Today it is often used humorously or ironically, though it can still convey a serious ethical message.