鲁定公问于颜回曰:“子亦闻东冶毕之善御乎.”对曰:“善则善矣.虽然.其马将必逸.”公不悦.其后三日.东冶毕之马逸.公闻之.促驾召颜回.颜回至.公曰:“前日寡人问吾子以东冶毕之善御.而子曰‘其马将逸’.不识吾子奚以知之.”颜回对曰:“以政知之而已矣.昔者帝舜巧于使民.而造父巧于使马.舜不穷其民力.造父不穷其马力.是以舜无逸民.造父无逸马.今东冶毕之御也.历险致远.马力尽矣.然而其心犹求马不已.臣以此知之延章案:满招损.谦受益.凡事留三分.”公曰:“善哉.吾子之言.其义大矣.愿少进乎.”颜回曰:“臣闻之:‘鸟穷则噣.兽穷则攫.人穷则诈.马穷则逸.’自古及今.未有穷其下而能无危者也.”公悦.