人非生而知之者，孰能无惑 rénfēishēng'érzhīzhīzhěshúnéngwúhuò one is not born with knowledge, how can one be without doubt
A classic saying from the Tang dynasty essayist [[韩愈|韓愈|han2 yu4]], emphasizing that because knowledge is not innate, everyone needs a teacher to resolve their confusion.