Kural - 749

At outset of the strife a fort should foes dismay;
And greatness gain by deeds in every glorious day

Explanation
A fort is that which derives excellence from the stratagems made (by its inmates) to defeat their enemies in the battlefield.

Tamil Transliteration
Munaimukaththu Maatralar Saaya Vinaimukaththu
Veereydhi Maanta Tharan.