You focus mainly on scientists, philosophers, and contemplatives, but I think the advice applies to artists and creatives as well. We can’t make our home in the depths, exciting and inflating as they may be. We must return from the descent and use our particular craft (painting, storytelling, music, etc.) to translate the experience and share what we have found with an audience. For an artist, integrating material from altered states of consciousness, like Waking Dreams, means precisely making the experience concrete in the form of an artwork/opus. If that artwork connects with an audience (at some point) it means that the experience had some shareable truth to it, and wasn’t just a private, delusional reverie. Hilma af Klint’s visionary paintings are a good example.