Human Nature Is Evil.
This view was proposed by Xunzi. According to him, human nature, which refers to proprieties humans naturally possess, includes physical life as well as various desires and perceptions. If people are allowed to only follow desire for external things, which is something inherent in human nature, it will lead to conflicts, and the society will fall into chaos. Moral conduct which is vital for maintaining order in society does not derive from human nature. Rather, it is acquired through deliberate efforts.
Human nature is evil, while a good conduct is always acquired. (Xunzi)
As human nature is evil, it must be corrected with moral teaching. Human nature can only be reined in with rites and righteousness. (Xunzi)