Hear no evil意思

"Hear no evil" is a part of the ancient proverb "See no evil, hear no evil, speak no evil," which is often represented in a set of three images of three monkeys. Each monkey is covering its eyes, ears, and mouth, respectively, with its hands. This proverb is a reminder to remain neutral, innocent, or oblivious to evil or negative things. It suggests that by not seeing, hearing, or speaking of evil, one can avoid being involved in it.