The Religion and Philosophy of the Veda and Upanishads v2.c40.s9.25

v2.c40.s9.25

The Upaniṣads assume in these accounts of the states of the soul the distinction between the knowledge possessed in dreams and that which the soul enjoys in waking moments. But in what does this important distinction consist? The answer to this problem, which is much discussed in later philosophy, cannot be supplied effectively from the Upaniṣads themselves, which, as has been seen, still fall short of developing a theory of the nature of sensation and perception.