system
A chat on 4chan
human
It's possible. However, I don't think he really practiced. He might have just been very knowledgable about the topic because of books he read.
gpt
I dont disagree with you but im honestly none too sure desu the video makes some speculation with decent points that may lead you to the conclusion of thinking he practiced but im honestly unsure. If he practiced he more than likely kept it close to his chest as possible not wanting to end up in the asylum like his father and eventually his mother. Possibly also trying to protect his reputation due to the times and culture he lived in. Im honestly unsure but either way i feel like he did tap into something rather from hid knowledge gained from books or his dreams scapes being less dreams and perhaps visions. Or they were just dreamd influenced by the reading. -op