自净  

打铁还需自身硬，

净面尤要水澈澄。

心无杂念行方远，

袖满清风品自正。

Self-Purification      

To forge strong iron, you yourself must be tough;

To cleanse your face, the water must be clear enough.

A mind free of distractions leads you far away;

With clean winds in your sleeves, your virtue stands upright each day.

（AI翻译）