The Age of the Vedas and the principal Upanishads was the Age of Intuition,¹ but this Age was followed by the Age of Reason. Inspired texts of the Veda and the Upanishads made room for metaphysical philosophy, even as afterwards metaphysical philosophy had to give place to experimental Science. The study of the history of the metaphysical philosophy of India demonstrates the great heights to which the pure reason developed, and the study of the experimental Science that developed in India demonstrates multisided development of the mixed action of the reason in minute subtlety and complexity; this mixed action of the reason explored the domains of experimental and pragmatic knowledge, and this afforded extreme possibilities of the development of the experiences of the physical mind and senses. This process can be seen as a circle of progress, since the results of the Age of Intuition came to be critically examined and assimilated by the Age of Pure Reason, and similarly the results of metaphysical philosophy came to be critically tested by the experiences and experiments that were meant to meet the demands of the mixed action of Reason and the physical mind and senses. In retrospect, it can be said that this succession and this attempt to separate assimilation enlarged the scope of inquiry and prevented the exclusive domination of any particular part of human consciousness and nature. A more complete harmony of different parts of knowledge was prepared.
In the development of philosophy that we see in the post-Upanishadic