Swami Vivekananda was the foremost disciple of Ramakrishna Paramahansa. He was earlier known as Narendra Babu, a graduate of Calcutta University. When he came in contact with Ramakrishna, there were several incidents to test each other’s spiritual powers and finally through Divine grace they became attached to each other.
He was the first monk from India to have visited the United States of America and started bridging the gulf between Western Science and Eastern religions and amalgamating them into one perception for righteous living. He was also a great patriot and worked hard for uplifting the poor in India. His message to the youth of India was to always be brave and fearless.
He started the Ramakrishna Mission and established several centers both in the USA and the UK. He expounded the philosophy of Vedas to Western audiences in such a convincing and lucid manner that several people became his ardent followers, foremost among them was Margaret Noble (1867-1911) who was later called sister Nivedita.