The Upanishads - Mandhata Global

34
It is not reasonable to think that a dreamer actually goes
out in order to experience the objects seen in the dream,
because of the discrepancy of the time involved in such
a journey. Nor does he, when awakened, find himself in
the places seen in the dream.
35
The dreamer, after awaking, realizes the illusoriness
of the conversations he had with friends etc. in the
dream state. Further, he does not possess in the
waking state anything he acquired while dreaming.
36
The dream body is unsubstantial because the other i.e.
the physical body, different from it, is perceived. Like
the dream body, all things cognized by the mind are
unsubstantial.
37
Since the experience of objects in dreams is similar to
the experience of objects in the waking state, waking
experience is regarded as the cause of dream experience.
It is only by him who admits waking experience to be
the cause of dream experience that waking experience
can be regarded as real.
158