In 1884, Tagore wrote a collection of poems Kori-o-Kamal (Sharp and Flats). He also wrote dramas – Raja-o-Rani ( King and Queen) and Visarjan (Sacrifice). In 1890, Rabindranath Tagore moved to Shilaidaha (now in Bangladesh) to look after the family estate. Between 1893 and 1900 Tagore wrote seven volumes of poetry, which included Sonar Tari (The Golden Boat) and Khanika. In 1901, Rabindranath Tagore became the editor of the magazine Bangadarshan. He Established Bolpur Bramhacharyaashram at Shantiniketan, a school based on the pattern of old Indian Ashrama. In 1902, his wife Mrinalini died. Tagore composed Smaran ( In Memoriam ), a collection of poems, dedicated to his wife.
In 1905, Lord Curzon decided to divide Bengal into two parts. Rabindranath Tagore strongly protested against this decision. Tagore wrote a number of national songs and attended protest meetings. He introduced the Rakhibandhan ceremony , symbolizing the underlying unity of undivided Bengal.
In 1909, Rabindranath Tagore started writing Gitanjali. In 1912, Tagore went to Europe for the second time. On the journey to London he translated some of his poems/songs from Gitanjali to English. He met William Rothenstein, a noted British painter, in London. Rothenstien was impressed by the poems, made copies and gave to Yeats and other English poets. Yeats was enthralled. He later wrote the introduction to Gitanjali when it was published in September 1912 in a limited edition by the India Society in London. Rabindranath Tagore was awarded Nobel Prize for Literature in 1913 for Gitanjali. In 1915 he was knighted by the British King George V.
In 1919, following the Jallianwala Bagh massacre, Tagore renounced his knighthood. He was a supporter of Gandhiji but he stayed out of politics. He was opposed to nationalism and militarism as a matter of principle, and instead promoted spiritual values and the creation of a new world culture founded in multi-culturalism, diversity and tolerance. Unable to gain ideological support to his views, he retired into relative solitude. Between the years 1916 and 1934 he traveled widely.
1n 1921, Rabindranath Tagore established Viswabharati University. He gave all his money from Nobel Prize and royalty money from his books to this University. Tagore was not only a creative genius, he was quite knowledgeable of Western culture, especially Western poetry and science too. Tagore had a good grasp of modern – post-Newtonian – physics, and was well able to hold his own in a debate with Einstein in 1930 on the newly emerging principles of quantum mechanics and chaos. His meetings and tape recorded conversations with his contemporaries such Albert Einstein and H.G. Wells, epitomize his brilliance.
In 1940 Oxford University arranged a special ceremony in Santiniketan and awarded Rabindranath Tagore with Doctorate Of Literature. Gurudev Rabindranath Tagore passed away on August 7, 1941 in his ancestral home in Calcutta.