'Nationalism has been authored by Rabindranath Tagore (7th May 1861 - 7th August 1941) He was a poet, writer, playwright, composer, philosopher, social reformer. He is well known by his creation - 'Gitanjali'. After this he became the first Indian to win the Nobel prize in literature. Nationalism is an essay, in which Tagore has narrated that the actual problem in our country is related to our society ie Social, not a political problem. Even is exists all over the world. The book consists of Nationalism in India and other countries as well. Basically we can grab two objects from our Social Institution ie One is to regalate our passions and appetites for the development of harmony amongst human and the other one is to help him in cultivating love for his fellow creatures. That is why Society is the expression of moral and spiritual aspirations. We lack in good health and our liberty is not a real freedom. Today even our Society is being involved in casteism. Here everyone is hunger of power in political arena. The author has described well that basically we are facing lots of Social problems rather political or other. Residing the concepts of Freedom Voyage says that we hanent got freedom of our souls. In the world over, the countrie are foussing into commercialization and under but we are fixed up in many unless concepts So our aim should be to grow up socially, workon social conforms then any own definition of Nationalism. Politically, as such ment a big isue but Socially lots of refarms are required. Tagore himself suffered from disillusionment. However he retained his faith in humanity. He considead that the power of self-sacrifice and the moral faculty of sympathy are the guiding sprite of Social vitality.