《庄子·外篇·秋水》
这都是时运所造成的。在水里活动而不躲避蛟龙的，乃是渔夫的勇敢;在陆上活动而不躲避犀牛老虎的，乃是猎人的勇敢;刀剑交错地横于眼前，看待死亡犹如生还的，乃是壮烈之士的勇敢。懂得困厄潦倒乃是命中注定，知道顺利通达乃是时运造成，面临大难而不畏惧的，这就是圣人的勇敢。
夫水行不避蛟龙者，渔父之勇也；陆行不避兕虎者，猎夫之勇也；白刃交于前，视死若生者，烈士之勇也；知穷之有命，知通之有时，临大难而不惧者，圣人之勇也。
This is all caused by luck. It is the bravery of the fisherman to operate in the water without avoiding the dragon and tiger, and it is the bravery of the hunter to operate on the land without avoiding the rhinoceros and tiger; those who face the sword with a fight to the death, but see death as if it were life, are bravery of the valiant. Knowing that adversity is destiny and knowing that success is a matter of luck, and being fearless in the face of great difficulties, this is the bravery of a saint.