《孟子·万章章句下·第七节》
《诗经》上说： 周朝所推行的道路如有基础，其笔直就象箭杆，君子所走的这条道路，是小人所必须效法的。  
诗云： 周道如底，其直如矢；君子所履，小人所视。  
In the Book of Poetry it is said, "The way of Chow is level and straight, as an arrow shot from a bow; and the way of the superior man is the same."