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He can be a teacher who finds what is new in reviewing what is old. Intelligent and fond of learning, he was not ashamed to ask and learn from his inferiors. By nature men are similar to one another, but learning and practice make them different. He who learns without thinking will be bewildered; he who thinks without learning will be in danger. To learn and then do, is not that a pleasure? When friends come from afar do we not rejoice? To live unknown and not fret, is not that to be a gentleman?