Isa Upanishad:Who sees all beings in his own Self, and his own Self in all beings, loses all fear.
Into deep darkness fall those who follow action. Into deeper darkness fall those who follow knowledge...Into deep darkness fall those who follow the immanent. Into deeper darkness fall those who follow the transcendent.
Kena Upanishad:It [the Spirit] is the ear of the ear, the eye of the eye, and the Word of words, the mind of mind, and the life of life.
[What about the screen upon which closed-eye visuals are projected upon? Are the hallucinogenic visions as objects something that is not of the physical body?]
He [Brahman] is known in the ecstacy of an awakening which opens the door of life eternal. By the Self [another word for Brahman] we obtain power, and by vision we obtain Eternity.
Katha Upanishad:Awake, arise! Strive for the Highest, and be in the Light!
[Do you think this light is the same as the light hallucinogenic drugs manifest, or a metaphor?]
The pure eternal Spirit...in space he is the sun, and he is the wind and the sky; at the alter he is the priest, and the Soma wine in the jar.
There is a Spirit who is awake in our sleep and creates the wonder of dreams. He is Brahman, the Spirit of Light, who in truth is called the Immortal. All the worlds rest on that Spirit and beyond him no one can go.
'This is That' - thus they realize the ineffable joy supreme. How can 'This' be known? Does he give light or does he reflect light? There the sun shines not, nor the moon, nor the stars; lightenings shine not there and much less earthly fire.
[Is 'there' the same place (location) as where we see visions?]
Prasna Upanishad:[The following, together with the forementioned about Brahman, lead me to ask if Hinduism is, in fact, monotheistic - the dieties being a manisfestation of Brahman.]
Thou [the Power Supreme] art Rudra, the god of protection; thou art Indra in thy radiance, O Life.
Kaushitaki Upanishad[I will close with these verses to emphasize the importance that Hinduism places upon awareness - remember that Indra is the Soma god]
Then Indra spoke:....When consciousness rules the eye, with the eye we can see all forms. When consciousness rules the ear, with the ear we can hear all sounds...When consciousness rules the mind, with the mind we can think all thoughts.