Synopsis Ramanuja’s role as a great religious teacher is unique in the annals of our sub-continent. His matha established at Srirangapatnam, was financed by several kings and affluent people. Soon he could attract thousands of his followers in the south as well as in the north of India. His ideology and philosophy were a challenge to the teachings of Adi Sankaracharya. The theme has been divided into nine chapters along with comprehensive appendices. They depict his early career which was devoted in search of truth, his philosophical thought and religious ideas, the nature of religion, the idea of God and his existence, about his concept of life and knowledge, the world, creation and liberation, and the rich legacy which he left for the coming generation. This work would be useful for teachers, scholars and students in India and abroad.