This book is a complete guide, both to the beginners and scholars, regarding all the four Vaishnavas sampradayas and their philosophy. It contains a brief life sketch of the four acaryas of the four Vaisnava sampradayas and also philosophical conclusions of each of these sampradayas. It also includes the acintya-bhedabheda siddhanta of Gaudiya Vaisnavism (Sri Brahma-Madhva-Gaudiya sampradaya), a special branch of the Madhva sampradaya, as given by Svayam Bhagavan Sri Caitanya Mahaprabhu.