The renowned ethnopharmacologist and research pharmacognosist, Dennis McKenna, wrote "The Brotherhood of the Screaming Abyss: My Life with Terence McKenna," ten years ago. That book is being republished, with a new afterword by Dennis, this month, so it seemed the right moment to talk about their relationship and respective evolutions, the experiences, people, literature and ideas that shaped them, and why Dennis regards the book that he and Terence co-authored in the mid-1970s, Magic Mushroom Grower’s Guide, as perhaps their most significant accomplishment.

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