The human skin is an artificial boundary: the world wanders into it,
and the self wanders out of it, traffic is two-way and constant.—Bernard Wolfe
. . .
The brain is silent, the brain is dark, the brain tastes nothing, the brain hears nothing. All it receives are electrical impulses—not the sumptuous chocolate melting sweetly, not the tingling caress, not the pastels of peach and lavender at sunset over a coral reef—just impulses.—Diane AckermanA Natural History of the Senses
. . .
The Theosophic doctrine that the physical world is an externalization of an astral plane or even the higher Platonic doctrine that it crystallizes a world of divine ideation is given to beginners as a help to give them a crude grasp, a first step towards the theory that the world is an idea, until they are mentally developed.
When their mind is mature they are then told to discard the astral plane theory and told the pure truth that all existence is idea.—Paul Brunton
Notebooks Category 21: MentalismChapter 3: The Individual and World Mind