Tirukkural-On Virtue-On Self Restraint-Kural 123

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Cerivarindhu seermai payakkum arivarindhu
Aarrin adankap perin

If one exercises self-restraint with knowledge and intent,He will gain distinction among the wise.

Knowing the wisdom of such a line of action, if one practices self-control in respect of thought, word and deed, he will certainly come to be counted among the good people of the world. In fact as the great English Epic Poet Milton would say,

'The command of one's self is the greatest
empire one can aspire to'.

The Gita says the following about the Self-Restrained;

'But the self-controlled man, moving among objects with senses under restraint, and free from attraction or aversion, attains tranquility.

(Gita: 2, 64)