PM Narendra Modi gathered applause and won hearts of many Tamilians while addressing the gathering at the Defence Expo in Tamil Nadu. He hailed the famous Tamil poet, Thiruvalluvar as a legend and quoted his lines in his speech and explained it. "In sand and soil, the deep you delve, you reach the spring below. The more you learn, the free streams of wisdom flow," he said. Watch the video on Asianet Newsable to get a glimpse of his heart-winning speech.