Swami Vivekananda (; Bengali: [ʃami bibekanɔndo] ; IAST: Svāmī Vivekānanda ; 12 January 1863 – 4 July 1902), born Narendranath Datta (Bengali: [nɔrendronatʰ dɔto]), was an Indian Hindu monk, philosopher, author, religious teacher, and the chief disciple of the Indian mystic Ramakrishna. He was a key figure in the introduction...