New Delhi, Jan. 14 -- : Prime Minister Narendra Modi said on Tuesday that India's celebration of "harmony, diversity and brotherhood" and "will and zeal" of its people were two essential reasons that the country's great civilisation has prospered.

The Prime Minister made the remarks while participating in the 50th anniversary of Thuglak magazine through Video Conference.

He said economic success mixes beautifully with social reform in Tamil Nadu and the land is home to the world's oldest language.

"Dynamism of Tamil Nadu and the Tamil people amazes me," he said.

According to a PMO release, he praised the "illustrious progress" made by the magazine in the last 50 years and said it was based on facts, intelligent arguments and satire.