《管子·轻重戊》
现在我把树上的枝叶剪掉，中午没有尺寸的树荫，往返者珍惜时光了，过路者快速赶路了，父老回家干活，青壮年也回家勤于本业了。
今吾沐涂树之枝，日中无尺寸之阴，出入者长时，行者疾走，父老归而治生，丁壮者归而薄业。
Now that I have cut off the branches and leaves of the tree, there is no shade at noon, and people passing through the area cherish the time more and travel faster, the older men have returned home to work, and the young and middle-aged men have also returned home to work hard at their jobs.