《资治通鉴·唐纪·唐纪三十四》
这时田乾真从潼关回来，为高尚、严庄说话，劝安禄山说： 自古以来，凡是要成就大事业的帝王，都有胜有败，怎么能够指望一举成功呢！
田乾真自关下来，为尚、庄说禄山曰： 自古帝王经营大业，皆有胜败，岂能一举而成！
Just then, Tian Qianzhen returned from Tongguan Pass and spoke up for Gao Shang and Yan Zhuang, urging An Lushan, "Since ancient times, every emperor who accomplished great achievements has experienced both victories and defeats. How can we expect to succeed at once!"