古代诗学概念。语见唐诗僧皎然《诗式》卷二:“且如‘池塘生春草’,情在言外。”“抑由情在言外,故其辞似淡而无味,常手览之,何异文侯听古乐哉?”认为谢灵运《登池上楼》中此句似平淡无奇,其实有深情远致蕴蓄于中,不直接说出,耐人寻味。 Ancient poetics concept. See the Tang poem monk Jiao Ran “Poetry” Volume II: “And such as ’pond raw spring grass’, the situation is outside the words. ” “Inhibits from the feeling in words, so its speech seems light and tasteless, He Wenwen Hou listen to ancient music zai? ”That Xie Lingyun“ climbers upstairs, ”the phrase seems bland, in fact, affectionate implied in, do not directly say, thought-provoking.