Xun Zi — Chinese Philosopher

Xun Kuang, known as Xunzi, was a Chinese Realist Confucian philosopher who lived during the Warring States period and contributed to one of the Hundred Schools of Thought... (wikipedia)

A person is born with feelings of envy and hate. If he gives way to them, they will lead him to violence and crime, and any sense of loyalty and good faith will be abandoned.
Human nature is evil, and goodness is caused by intentional activity.
In order to properly understand the big picture, everyone should fear becoming mentally clouded and obsessed with one small section of truth.
Therefore, a person should first be changed by a teacher's instructions, and guided by principles of ritual. Only then can he observe the rules of courtesy and humility, obey the conventions and rules of society, and achieve order.
The person attempting to travel two roads at once will get nowhere.