Maharshi Dayananda Saraswati was a Hindu reformer who founded the Arya Samaj movement in India in 1875. He believed in restoring Hinduism to its original Vedic principles by removing corruptions and superstitions that had been introduced over time. Some of his key teachings included rejecting idol worship, caste discrimination, and promoting education based on the Vedas. Despite facing opposition and even an assassination attempt, Dayananda traveled widely advocating for his reforms. He established the Arya Samaj organization and its 10 principles to guide followers in leading a righteous life according to the teachings of the Vedas.