Kural - 484

The pendant world's dominion may be won,
In fitting time and place by action done

Explanation
Though (a man) should meditate (the conquest of) the world, he may accomplish it if he acts in the right time, and at the right place.

Tamil Transliteration
Gnaalam Karudhinung Kaikootung Kaalam
Karudhi Itaththaar Seyin.