The topic is well covered in the text. The treatment's adherence to the foundational texts of the major schools is one of the work's distinguishing characteristics. Beginning with the primary Upanisads and going through the Puranas, the Gitas, the Manusamhita, and the Ramayana while discussing the notions that were present in all of these writings, these books address the development of religious and spiritual thought as well as philosophical inquiry. The book's foundation was the analysis of the original documents. It deals with the systems' epistemology, logic, ontology, psychology, ethics, and religion even though it concentrates on their ontology. The logic of Gangesa's Carvaka, Vaisesika, Nyaya, and Navya Nyaya are all thoroughly examined.