"High Society - Mind-Altering Drugs in History and Culture" by Mike Jay. ISBN 978 0 500 28910 5
"Psychoaktive Pflanzen, Pilze und Tiere" by Andreas Alberts and Peter Mullen ISBN 978 3 440 10749 2
"Pharmakopoeia", "Pharmakodynamis" and "Pharmakognosis" by Dale Pendell ISBN 978 1 55643 805 9, ISBN 978 1 55643 803 5, and ISBN 978 1 55643 804 2, respectively.
“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
― Jacques Bergier, quoting Fulcanelli