《淮南子·缪称训》
薄的积多了可以变厚，低的积多了可以变高。所以君子每天勤勉地行善以成光辉的美德，小人每天因贪心不足而怏怏不乐，以致品德败坏而受辱。
积薄为厚，积卑为高，故君子日孳孳以成辉，小人日怏怏以至辱。
The thin accumulates to become thick, and the low accumulates to become high. So the gentleman diligently does good every day to become a glorious virtue, and the villain is unhappy every day because of his greed, so that his character is corrupted and he is humiliated.