Ananda Tirtha, also known as Madhvacharya, was a prominent philosopher and theologian in the 13th century. He is best known for founding the Dvaita school of Vedanta, which emphasizes a dualistic interpretation of reality, distinguishing between the individual soul and the supreme being, Vishnu. His teachings advocate devotion and surrender to God as the path to liberation. Ananda Tirtha's works include commentaries on the Bhagavad Gita and the Upanishads, where he elaborates on his philosophical ideas. His influence extends beyond philosophy, impacting various aspects of Hinduism and inspiring numerous followers, known as Madhvas, who continue to uphold his teachings today.