"When an opinionated person starts to challenge something, his mind shuts out all that could clear up the matter. The argument irritates him, however just it might be, and it seems that he is afraid of discovering the truth."

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Soil with a lot of manure in it produces abundant crops; water that is too clear has no fish. Therefore, enlightened people should maintain the capacity to accept impurities and should not be solitary perfectionists.

— Zicheng Hong