What poems lament the complexity of human nature?

1, the two grasses are still one, and people's hearts are not as good as grass.

This sentence comes from the white "White-headed Song", which means that the grass in nature can still be tightly wound and never give up, but people's hearts are not as persistent and firm as the grass.

2, hate people's hearts is not as good as water, and there is nothing to make waves when you are idle.

This sentence comes from Liu Yuxi's Zhi Zhu Ci, which means that the water in Qutang Gorge is choppy because of rocks, reefs and reefs, but people in the world can't even compare with the rushing river, because people will flatten for no reason.

3, whoever has no intention will tolerate and subvert the hearts of small people.

This sentence comes from Wang Yucheng's "Two Poems on Spring", which means who told you that you can be carefree as long as you have nothing to want, but in fact, those fickle little people will still aim at calculating you.

4, the heart is only one inch, and the wind and rain start day and night.

This sentence comes from Chai Yuanbiao's Heart Melody, which means that although people's hearts are so big, there will always be many storms for no reason.

There is no doubt that human heart is invaded by reason and potential.

This sentence comes from Yang Ji's Feelings, which means that people should believe everything in their hearts, but after many things happen, they will be mixed with reason and strength and become suspicious.