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.
Terence McKennaAnd what we're looking toward is a moment when the artificial language structures which bind us within the notion of ourselves are dissolved in the presence of the realization that we are a part of nature. And when that happens, the childhood of our species will pass away, and we will stand tremulously on the brink of really the first moment of coherent human civilization.
Terence McKennaWhere psychedelics comes together with that is that it's going to require a transformation of human language and understanding to stop the momentum of the historical process, to halt nuclear proliferation, germ warfare, infantile 19th century politics, all these things. It cannot be accomplished through a frontal assault upon it by political means.
Terence McKennaAll psychedelic explorers should be aware of the concept of what is called a cognitive hallucination. The is a much more insidious phenomenon. This is, quite simply, an out-and-out delusion.
Terence McKennaThe movement of a single atom from one known position to another known position changes an experience from nothing to overwhelming. This means that mind and matter at the quantum mechanical level are all spun together.
Terence McKenna