嚴於律己 yán yú lǜ jǐ

DEFINITIONS

  1. to be strict with oneself

CHARACTERS

嚴 yán strict, rigorous, rigid; stern
於 yú in, at, on; interjection alas!
律 lǜ statute, principle, regulation
己 jǐ self, oneself; personal, private; 6th heavenly stem