In this book very clear and exhaustive account of the idea of' Matter' according to Nyaya- Vaisesika Philosophy has been given. Various systems of doctrines are interpreted very carefully, keeping in mind the angle of vision which two systems- Nyaya and Vaisesika represent in the realm of Indian system. Every system of thought- Hindu, Buddhist, Jaina and Carvaka-are discussed in detail, Vasana and Karmans, etc. All the Vaisnava philosophies, the Tautrists, Saivas, Saktas, the Advaitins, have also found place in the book. The nature of pure matter according to Christian theology, Vaisnava Acaryan explained in a very lucid manner. By and large, this books countains a vast knowledge of Indian Philosophy.