ideal is the beacon. Without ideals, there is no firm direction; There is no life without direction. -Tolstoy

To achieve a great cause, we must do it from small things. -Lenin

It is the most valuable quality to be immersed in the mud and not be corroded by bourgeois sugar-coated shells. -Zhou Enlai

Looking at the former sages' countries and families, it turned from thrift to extravagance. -Li shangyin

Diligence and wisdom are twins, laziness and stupidity are brothers. -folk proverb