Bhaktisiddhanta Sarasvati Thakura was the spiritual master of His Divine Grace A.C. Bhaktivedanta Swami Prabhupada, the Founder-Acharya of ISKCON. Srila Bhaktisiddhanta Saraswati Thakura powerfully spread the teachings of Chaitanya Mahaprabhu in the early twentieth century. He preached strongly against the deep-rooted influences of caste-ism and impersonalism. Meeting with scholars, educators, and other leaders and writing over 108 essays and books, he strove to present Krishna consciousness as a science to be highly esteemed. He established 64 temples, known as Gaudiya Maths, inside and outside of India.