《中庸·第十三章》
拿着斧子去砍树做斧把，准备照着旧斧把的样子做新斧把，但是斜着眼睛看上去，斧把的样子好像还是离得很远。
执柯以伐柯，睨而视之，犹以为远。
Holding an axe to cut down a tree to make an axe handle, intending to make a new axe handle according to the old axe handle, but looking at it from an angle, the shape of the axe handle still seems to be very far away.