Certainly neo-Platonism, Plotinus and Porphyry and that school are psychedelic philosophers. Their idea of an ascending hierarchy of more and more rarefied states is a sophisticated presentation of the shamanic cosmology, which is the cosmology that one experientially discovers when they involve themselves with psychedelics.

The human brain is the god of technological innovation.

Death is the black hole of biology. It's an event horizon, and once you go over that event horizon, no information can be passed back out of the hole.

Psychedelic experiences are beyond the reach of cultural manipulation, and discovering this and exploring it is somehow the frontier of maturity. Culture is a form of enforced infantilism. It's the last nursery, and most people never leave it.

The felt presence of immediate experience-- this is all you know. Everything else comes as unconfirmed rumor.

Psychedelics are illegal not because a loving government is concerned that you may jump out of a third story window. Psychedelics are illegal because they dissolve opinion structures and culturally laid down models of behaviour and information processing. They open you up to the possibility that everything you know is wrong.

That's the core puzzling experience, when you meet the Other organized as a speaking mind.