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The riddle does not exist.
The historian must be a poet and an artist in order to give life to the dead bones of the past.
Neither the life of an individual nor the history of a society can be understood without understanding both.
如果谋虑不到,那么就根据过去推知未来(主要强调凭借经验),根据明显的事推知隐微的事。像这样谋虑,那么所谋必得(成功)。
Letters are the biographer's gold mine; they reveal what official records conceal.