Swami Vivekananda(12 January 1863 – 4 July 1902):

Swami Vivekananda was born in an aristocratic Bengali family of Calcutta on January 12, 1863. Swami's parents influenced his thinking—the father by his rational mind and the mother by her religious temperament. From his childhood, he showed inclination towards spirituality and God realization. As a guru, Ramakrishna taught him Advaita Vedanta (non-dualism) and that all religions are true, and service to man was the most effective worship of God. After the death of his Guru, Vivekananda became a wandering monk, touring the Indian subcontinent and getting first-hand knowledge of India's condition. He later sailed to Chicago and represented India as a delegate in the 1893 Parliament of World Religions. He conducted hundreds of public and private lectures and classes, disseminating Vedanta and Yoga in America, England and a few other countries in Europe. He also established the Vedanta societies in America and England.
             In June 1899 he went to the West on a second visit. This time he spent most of his time in the West coast of USA. After delivering many lectures there, he returned to Belur Math in December 1900. The rest of his life was spent in India, inspiring and guiding people, both monastic and lay. Incessant work, especially giving lectures and inspiring people, told upon Swamiji’s health. His health deteriorated and the end came quietly on the night of 4 July 1902.