Restrain From Evil Speech 禁止恶口

白圭之玷，
尚可磨也；
斯言之玷，
不可为也！

—《诗经•大雅•抑》

The blemishes of white jade,
still can be polished away,
but for the blemishes of that said,
this cannot be done!

— (Book Of Odes: Greater Odes: Restraint)