《隋书·经籍志》史部目录类序云:“古者史官既司典籍,盖有目录以为纲纪,体制湮灭,不可复知。孔子删书,别为之序。韩、毛二《诗》,亦皆相类。汉时刘向《别录》、刘歆《七略》,剖析条流,各有其部,推寻事迹,疑则古之制也。”这段话指出古代史官通过目录来 History of the Book of Sui Shu Jing Ji Zhi class cloud: “The ancient historian both Secretary of the classics, covered with the directory as a key link, annihilation system, can not be re-informed.” Confucius cut the book, Poem “, are also similar to Han Liu Xiang,” Do not record “, Liu Xin,” Seven Lips “, analysis of the stream, each with its own, looking for deeds, suspicion of the ancient system also.” This passage pointed out Ancient historians come through the directory