Swami Vivekananda was a renowned spiritual leader and philosopher who played a crucial role in the revival of Vedanta and Hinduism in the late 19th century. He was born as Narendranath Datta on January 12, 1863, in Calcutta, India. From a young age, he showed a keen interest in spirituality and philosophy and was greatly influenced by his guru, Sri Ramakrishna.

Swami Vivekananda is best known for his teachings on Vedanta and his efforts to spread the message of Hinduism and its core principles to the Western world. He firmly believed in the universality of all religions and emphasized the importance of tolerance and acceptance towards different faiths.

One of his most significant contributions was his speech at the Parliament of the World's Religions in Chicago in 1893. This historic speech, where he addressed the audience as "Sisters and Brothers of America," was a powerful message of universal brotherhood and harmony. It brought him instant recognition and established him as a prominent figure in the world of spirituality.

Swami Vivekananda's teachings were a blend of traditional Hinduism and modern rationalism. He emphasized the need for practical application of spiritual principles in daily life and encouraged individuals to seek inner transformation rather than external rituals. He believed that the true purpose of life is to realize one's inner divinity and attain self-realization.

Another significant aspect of Swami Vivekananda's teachings was his emphasis on service to society. He believed that the true test of spirituality lies in one's ability to serve others and make a positive impact on society. He founded the Ramakrishna Mission and the Ramakrishna Math, which continue to carry out various social service activities to this day.

Swami Vivekananda's teachings continue to inspire millions of people around the world. His message of universal brotherhood, tolerance, and selfless service is as relevant today as it was during his time. He is also remembered for his eloquence and powerful oratory skills, which captivated audiences and left a lasting impact on their minds.

In conclusion, Swami Vivekananda is known as a disciple of Sri Ramakrishna, a Vedanta revivalist, and a spiritual leader who spread the message of Hinduism and its core principles to the world. His teachings on universal brotherhood, self-realization, and service to society continue to inspire and guide people towards a better and more harmonious world.