Chennai: DMK chief M Karunanidhi has written a letter to PM-designate Narendra Modi lavishing praise on him for reaching the top through his "innate intelligence and hard work." PromotedListen to the latest songs, only on JioSaavn.comFollowing is the full text of his letter: Also ReadFormer AAP MLA Sukhbir Singh Dalal Joins BJP Ahead Of Delhi Assembly PollsPM Modi Meets 101-Year-Old Ex-IFS Mangal Sain Handa In Kuwait, Wins Hearts"Here To Celebrate Your Achievements": PM Modi To Indian Community In Kuwait