Kural - 337

Who know not if their happy lives shall last the day,
In fancies infinite beguile the hours away

Explanation
Innumerable are the thoughts which occupy the mind of (the unwise), who know not that they shall live another moment.

Tamil Transliteration
Orupozhudhum Vaazhvadhu Ariyaar Karudhupa
Kotiyum Alla Pala.