'See no evil, hear no evil, speak no evil'

“See no evil, hear no evil, speak no evil" is a common phrase, usually used to describe someone who doesn’t want to be involved in a situation.

Unfortunately, no one knows for sure how it evolved. Because the saying is typically associated with three monkeys one covering his eyes, one covering his ears, and the other covering his mouth it is believed that the saying may have its origin in a 17th century temple in Japan.
The Nikko Toshogo Shrine, also known as the Sacred Stable, in Japan has a carving of three wise monkeys. Many scholars believe the monkeys were carved as a visual representation of the religious principle, “If we do not hear, see, or speak evil, we ourselves shall be spared all evil."