Swami Vivekananda was born in Calcutta, in 1863. From his childhood, he showed inclination towards spirituality and God realization. While searching for a man who could directly demonstrate the reality of God, he came to Ramakrishna and became his disciple. As a guru Ramakrishna taught him Advaita Vedanta and that all religions are true, and service to man was the most effective worship of God, in 1897 he founded the Ramakrishna Math and Mission.
He is considered a key figure in the introduction of Vedanta and Yoga in Europe and America and is also credited with raising interfaith awareness, bringing Hinduism to the status of a world religion during the end of the 19th Century. He is best known for his inspiring speech beginning with “sisters and brothers of America”, through which he introduced Hinduism at the Parliament of the World’s Religions at Chicago in 1893.