http://culturaladmixtures.wordpress.com/2014/07/14/physicists-alchemists-and-ayahuasca-shamans-a-study-of-grammar-and-the-body/ An interesting mini-essay...
"Are there any common denominators that may underlie the practices of leading physicists and scientists, Renaissance alchemists, and indigenous Amazonian ayahuasca healers? There are obviously a myriad of things that these practices do not have in common. Yet through an analysis of the body and the senses and styles of grammar and social practice, these seemingly very different modes of existence may be triangulated to reveal a curious set of logics at play."
"Through a brief exploration of techniques employed by advanced physicists, Renaissance alchemists, and Amazonian ayahuasca shamans, a logics of identification may be observed in which practitioners embody different means of transcending themselves and becoming the ‘objects’ or spirits of their respective practices."