"A person is born with desires of the eyes and ears, and a liking for beautiful sights and sounds. If he gives way to them, they will lead him to immorality and lack of restriction, and any ritual principles and propriety will be abandoned"

In this quote, Xun Zi is mentioning that people have natural desires and tendencies to pursue beautiful sights and sounds through their eyes and ears. Nevertheless, if one succumbs to these desires without self-restraint, they may end up being unethical and abandon any concepts or propriety. Hence, Xun Zi is highlighting the importance of self-control and discipline in keeping moral behavior.