Hawzah News Agency - The commander of the faithful peace be upon him says:

أَزْرَى بِنَفْسِهِ مَنِ اسْتَشْعَرَ الطَّمَعَ

He who adopts greed as a habit devalues himself;

وَ رَضِيَ بِالذُّلِّ مَنْ كَشَفَ عَنْ ضُرِّهِ

he who discloses his hardship agrees to humiliation;

وَ هَانَتْ عَلَيْهِ نَفْسُهُ مَنْ أَمَّرَ عَلَيْهَا لِسَانَهُ

and he who allows his tongue to overpower his soul debases the soul.

Source: Nahj al-Balagha Saying n. 2