孔子观于吕梁,县水三十仞,流沫四十里,鼋鼍鱼鳖之所不能游也。见一丈夫游之,以为有苦而欲死也,使弟子并流而拯之。数百步而出,被发行歌而游于塘下。孔子从而问焉,曰:“吾以子为鬼,察子则人也。请问蹈水有道乎?”曰:“亡,吾无道。吾始乎故,长乎性,成乎命。与齐俱入,与汩偕出,从水之道而不为私焉。此吾所以蹈之也。”孔子曰:“何谓始乎故, View of Confucius in Luliang, the county water thirty, fluid forty, can not swim the turtle can also swim. See a husband tour, that there is bitterness and desire to death, so disciples and flow and save. Hundreds of steps out of the issue song and swim in the pond. Confucius asked Yan, saying: ”I am a child is a ghost, Cha Zi is also people. Almost all life, together with the 汩 kai, from the water of the road rather than self-yan .This I dance too. “Confucius said: ”