Quote:The occult observer is able to see a continual streaming from outside into the brain, and also in the reverse direction, from the brain to the heart. Now these streams, which in sleeping man come from outside, from cosmic space, from the Macrocosm, and flow into the inner constitution of the physical body and etheric bodies lying in the bed, reveal something remarkable when they are investigated. These rays vary greatly in different individuals. Sleeping human beings differ very drastically from one another, and if those who are a little vain only knew how badly they betray themselves to occult observation when they go to sleep during public gatherings, they would try their level best not to let this happen!
https://rsarchive.org/Lectures/EthBld_index.html
Rudolf Steiner
This was one of the passages that stuck out to me. I have seen some crazy things fly in out of people while they sleep, most disturbing, couldn't agree with him more.