Rajaji was a very popular writer in Tamil and English, Some of his books have a unique place in the world of letters. He has also translated some Kannada stories into Tamil. He has written more than thirty books. His books on the ancient Roman King Marcus Aurelius, on the Bhagavad- Gita, the Ramayana, the Mahabharata and the Upanishads are all very famous. Even a common man can read and understand his writings. Rajaji said, "My books on the Ramayana and the Mahabharata are my greatest service to my people." There is no exaggeration in it. Their simple style is very attractive.

They are books, which every Indian should read and enjoy. By translating the Ramayana and the Mahabharata into simple and beautiful English, Rajaji has made it possible for the people of the Western countries to read and enjoy these great epics of India. The Mahabharata written in English by Rajaji is a textbook for Oriental Studies in five American Universities and more than three lakh copies of it have already been sold. Two lake copies of the Ramayana have been sold. Rajaji spoke and wrote very simple language. He was a great scholar, but his language was never pedantic. When people heard him speak, they were amazed that difficult and profound ideas could be expressed in such simple words. The same feeling comes when we read his books. Rajaji's stories have their own charm. He had a fine sense of humor. Even while speaking in the legislature, according to the situations he was telling some stories. He wrote many articles in the "Swarajya". He dealt with every subject in the country's affairs. Any article by him on any subject always presented a new 
angle. It would make the readers think again. But the language was quite simple.

It was Rajaji who introduced teaching of Hindi compulsory in Madras. But twenty years later Rajaji himself led the agitation against Hindi. He felt strongly that in the eagerness to spread Hindi as the national language, the regional languages should not be adversely affected; their development should not be harmed.