唐代大诗人白居易写过一组《放言》诗,其中的第三首是讲辨材真伪的:“赠君一法决狐疑,不用钻龟与祝蓍。试玉要烧三日满,辨材须待七年期。周公恐惧流言日,王莽谦恭未篡时。向使当年身便死,一生真伪有谁知。”选拔和使用人才的前提是识别人才。这是一门大学问。古代把察人、选官? Bai Juyi, the poet of the Tang Dynasty, wrote a group of poems about “Putting Words”, the third of which is the authenticity of the materials: “When you donate a monarch, Text material to be seven years. Weeks fear rumors day, Wang Mang humiliation did not usurp. To make the body stuttering, the truth of life knows. ”The premise of selecting and using talent is to identify talent. This is a university question. Ancient people, election officials?