《荀子·不苟》
这就如同一个人的品行有污秽需要整治，并非在污秽的基础上去整治它，而是去掉污秽换上美好的品行。
去乱而被之以治；人污而修之者，非案污而修之之谓也，去污而易之以修。
This is just like when a person's character is tarnished and needs to be rectified, it is not rectified on the basis of the existing tarnish, but the tarnish is removed and replaced with good character.