Graham Hancock author of Fingerprints of the Gods is a top bloke. However ever since he embarked on a personal odyssey to South America to drink the jungle tea brew of Ayahuasca with South American Shamans his spirituality has sky rocketed and he has become a wonderful ambassador for confronting the ignorance that entheogens are the same as the loosely banded drug term which applies to a pharmacy and heroin. Well worth a listen and of course there's more on DMT and entheogens on this blog if your curiosity is wetted.