It was an interesting book, but I was hoping for much more new information. The vast majority of this book is about the studies done in the early 1960s (about which I think most people interested in entheogens have already read). There was a tiny sliver of newer information, but not enough to build a book around. The newer stuff included, oddly enough, some trip reports the likes of which can be found all over the internet. The cover led me to believe I was getting something other than what I got.

The most interesting part was the chapter speculating about the value of micro-doses of psychedelics- doses too small to cause tripping, but which seem to have profound effects over time.

It's not a bad book, don't get me wrong. It's informative and well-written, and it's a subject that doesn't get enough good press. But Timothy Leary's dead, let's get some fresh quotes.
( )

With the publication of The Psychedelic Explorer’s Guide, James Fadiman has inaugurated a new era of spiritual and practical exploration of inner space. Mind you, he didn’t invent or even rediscover the spiritual use of entheogens, nor the psychotherapeutic exploration of psychoactive plants and chemicals, but this guidebook represents a bold re-emergence of an ancient healing practice... https://www.erowid.org/library/review/review.php?p=334 ( )