人非生而知之者，熟能無惑 [ㄖㄣˊ ㄈㄟ ㄕㄥ ㄦˊ ㄓ ㄓ ㄓㄜˇ , ㄕㄨˊ ㄋㄥˊ ㄨˊ ㄏㄨㄛˋ; ren2 fei1 sheng1 er2 zhi1 zhi1 zhe3 , shu2 neng2 wu2 huo4]
 Knowledge is not innate to man, how can we overcome doubt?
 We are not born with knowledge, how does one achieve maturity? (i.e. without guidance from a teacher - Tang dynasty essayist Han Yu 韓愈)

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