Abstract
In the Indian tradition, the identification of pure consciousness as an independent monistic principle identical with Being can be traced, as is well known, to the earliest Upaniṣadic speculations. The general picture to emerge from these reflections on the nature of subjective experience and external reality, although far from systematic, described consciousness as the ultimate subject of all mental states, itself ever precluded from becoming an object; as a universal type, it transcends the psychophysical complex constituting the empirical individual and the three associated levels of waking, dream, and deep-sleep consciousness common to all. Ubiquitous, pure consciousness is the foundation for the knowledge ..