《国语·越语·范蠡谏勾践勿许吴成卒》
前人有一句话说： 砍树干做斧柄，手里拿的斧柄就是式样，不必去远处寻找。 
先人有言曰： 伐柯者其则不远。 
There is a saying that says: "To cut a tree trunk as an axe handle, the axe handle in hand is the model, no need to look for it far away."