《六韬·龙韬·军势》
善于打仗的人，看到有利的情况决不放过，遇到有利的战机决不迟疑。否则，失掉有利条件放过有利战机，自己反而会遭受祸殃。
善者见利不失，遇时不疑，失利后时，反受其殃。
Those who are good at fighting will never let go of an advantage when they see it; and they will never hesitate when they encounter a favorable opportunity. Otherwise, if they lose their advantage and let go of a favorable opportunity, they will instead suffer misfortune.