《古诗四帖》无款,传为张旭所作。明朝以前,或有题为谢灵运所书者,明人丰坊曾辨之,以为不可能为谢灵运所书,但也没有指明书者为何人。董其昌定为张旭所书,后人多信从之。启功先生经过严密的考证,指出此帖乃“宋人狂草书”,是北宋真宗大中祥符以后的人所书。他说:“此卷(《古诗 “Ancient Poem four posts” no money, biography made by Zhang Xu. Before the Ming dynasty, either there was a book entitled Xie Lingyun, Ming Feng Feng Square had identified it as impossible for Xie Lingyun, but did not specify who the person. Dong Qichang book for Zhang Xu, posterity and more from the letter. After careful research, Mr. Qigong pointed out that this post was “The Manchurian Calligraphy of the Song Dynasty” and was written by people of the Northern Song Dynasty under the auspices of Emperor Xiangzong. He said: “This volume (” Ancient Poetry