Kural - 985

Submission is the might of men of mighty acts; the sage
With that same weapon stills his foeman's rage

Explanation
Stooping (to inferiors) is the strength of those who can accomplish (an undertaking); and that is the weapon with which the great avert their foes.

Tamil Transliteration
Aatruvaar Aatral Panidhal Adhusaandror
Maatraarai Maatrum Patai.