The Teaching of the Upanisads

It is  read the Upanisads after having finished University education. One of the doctrines held in common by all ancient scholars was that there was no contradiction between the different portions of the Vedas, which include the Upanisads. But practically all the Western scholars, proceeding on the theory of the evolution of knowledge, have asserted that there is conflict between the Upanisads and the earlier Vedas. Thus for example they say that the Upanisads have denied the existence of the minor gods and the efficacy of Vedic sacrifices. On the other hand in practically all the Important Upanisads there are many passages which refer to the existence of the minor gods and assert the efficacy of Vedic sacrifices in enabling the performer to attain heaven. It seemed that in these respects he prejudice of the Western Scholars against minor gods and Vedic sacrifices was wrongly ascribed by them to the rises of the Upanisads.