The Classic of Diseases gave birth to a famous sentence of Lu You in Song Dynasty.

The famous sentence in this poem is: I dare not forget to worry about my country, but I still have to close the coffin.

Brief analysis: These two poems are the gist of the whole article. These two sentences let us see the poet's noble personality and a loyal and patriotic heart. Because the poet is aboveboard and open-minded, he doesn't mind temporary setbacks. He firmly believes that history is just and will definitely make an appropriate evaluation of a person. But poets are not limited to expressing their feelings, but take national affairs as their own responsibility.