Swami vivekanand was a great Indian monk and spiritual leader. His birth anniversary is celebrate as National youth day. Swami vivekanand was born On 12th January 1863 at Calcutta. His pre-monastic name was Narendra nath Dutta. His father name is Vishwanath Dutta , a famous lawyer. His mother name is Bhubaneswari devi, a housewife. He was very intelligent and scholer , always great in studies. As well as he was very mischievous also. The cast and class discrimination always hit little Naran, he always raised question about it. Meditation was his favorite play, he always love to meditate with his friends.He studied in Metropolitan Institute and later on Presidency college. His life completely changed after his father’s death, he learn the true meaning of life by his guru Sri Ramakrishna Paramhans dev. After his death he devoted himself into spread his religious across the world. He became brhamhacharya for lifetime.He also made Ramakrishna mission at 1897.In 1893, he gave a very famous speech in Chicago, which is still recognised by people now.All the valuable ideas and knowledge of Swamiji are great assets of Philosophy. His viewshelp youth in knowing about the advanced philosophy of the Vedanta and Raj Yoga. The spiritual knowledge of Swamiji engages in works of social and educational purposes. He has also discovered various mathematical topics for religious teaching. This great leader passed away at 4th July, 1902 at a very young age of 39.