"Absolutely one of the most fascinating podcasts I've ever done ... f*cking sensational." ―Joe Rogan, host of The Joe Rogan Experience

"As excitingly plotted as Dan Brown. Extraordinarily readable. Of substantive intellectual interest. Quite the trip. Almost impossible to put down." ―Jordan B. Peterson

"The book―which is like nothing I had read before, it puts other ‘popular scholarship’ to shame―is part popularized classical scholarship and part Da Vinci Code-influenced investigative journalism." ―Candida Moss, The Daily Beast

"A mindblower." ―Mark Manson, #1 New York Times bestselling author of The Subtle Art of Not Giving a F*ck

“Like The Da Vinci Code. Tremendous. Stunning.” ―Michael Smerconish, CNN

"Amazing. Truly fascinating. Indiana Jones meets the history of psychedelic experience within religion. I want to see a reality docuseries based on this." ―John Fugelsang, host of Tell Me Everything

“Completely captivated. Mesmerizing evidence.” ―Elise Loehnen, goop

"Exceptional investigative work." ―Derek Beres for Big Think

"The Immortality Key is an astonishing and remarkable book that explores the mysterious links between psychedelic drugs, human consciousness, and the origins of Christianity. It presents truly ground-breaking research on many levels, tracing the use of psychedelic drugs from Ancient Greece through Rome and into the early days of Christianity, where they played a role―possibly a crucial one―in the new religion of Jesus Christ. This is a fascinating book, which I highly recommend." ―Douglas Preston, #1 New York Times bestselling author of The Lost City of the Monkey God

"An outstanding inquiry into the power of the Mysteries in the ancient world. A sweeping, persuasive argument from a true Renaissance intellect. The writing is most vivid." ―Gregory Nagy, Francis Jones Professor of Classical Greek Literature, Harvard University

"A fascinating analysis of the mystical roots of ancient religion, and a rediscovery of a forgotten ritual for the modern world." ―Deepak Chopra

"In Brian Muraresku, the psychedelic theory of religion has its newest and most accomplished scholar-historian (who also happens to be very funny). This is no crackpot idea. This is genuine scholarship at its deepest, most comparative, and most conceptually radical. The breadth of the investigation is simply astonishing: the Eleusinian Mysteries; the cosmic love of God; Göbekli Tepe and Indo-European studies; Greek, Latin, Sanskrit, and Catalan; flying witches and the long religious war on women; the Vatican Secret Archives; democracy, ethics, and the unity of humankind; hard archaeochemical and DNA evidence; the first (Dionysian) miracle of Christ in the Gospel of John; the political radicalism of the Eucharist; LSD-laced graveyard beer and psychedelic wine. Buckle up tight, Toto. You were never in Kansas. It’s Oz everywhere and always." ―Jeffrey J. Kripal, Associate Dean of Faculty and Graduate Studies, Rice University, author of Esalen: The Religion of No Religion

"Muraresku has successfully unwrapped one of history's greatest riddles with a measured, skeptical eye. His ability to sift through the evidence with an open mind and discriminating wit keeps the pages turning." ―Leslie Kean, author of UFOs: Generals, Pilots and Government Officials Go on the Record and Surviving Death: A Journalist Investigates Evidence For An Afterlife

"Brian Muraresku's The Immortality Key connects the lost, psychedelic sacrament of ancient Greek religion to early Christianity -- exposing the true origins of Western Civilization. Muraresku brings to light a secret with the capacity to revolutionize our understanding of the past and chart a bold, new course for the future." ―Graham Hancock, New York Times Bestselling Author of America Before

"In The Immortality Key, Muraresku reconstructs the forgotten history of psychedelics in the development of Western civilization. His analysis of the roots of Christianity will shake the foundation of organized religion and point the way to a revolution in consciousness." ―Andrew Weil, M.D.

"An impeccably researched journey to the crossroads of history. The questions are provocative, the disclosures earth-shaking. By deciphering the relationship between Jesus and Dionysos, Brian Muraresku has achieved nothing less than a radical re-envisioning of the Christian story." ―Mark Arey, Former Director of the Office of Inter-Orthodox, Ecumenical and Interfaith Relations of the Greek Orthodox Archdiocese of America

"A timely message, given the re-emergence of psychedelic research for end-of-life distress. A tour de force on the perennial quest to unlock the mystery of death. A spiritual adventure page-turner that’s not easy to put down. And a mystery tour well worth taking." ―Anthony P. Bossis Ph.D., Clinical Assistant Professor of Psychiatry, New York University School of Medicine

"With his new book, The Immortality Key, Brian Muraresku offers an invigorating look at the birth of religion as the ancient secret of dying before dying, providing us with a rejuvenating blast of what my friend Huston Smith described as authentic enthusiasmos, an ecstatic experience of the god within." ―Phil Cousineau, author of Once and Future Myths, and coauthor with Huston Smith of And Live Rejoicing: Chapters from a Charmed Life

"A manifesto, briskly paced and engaging from page one, on the very real possibility of a psychedelic eucharist. I strongly recommend this intriguing, provocative, and thoughtful book." ―Julie Holland, MD, author of Good Chemistry: The Science of Connection From Soul to Psychedelics

"In his Introduction alone, Muraresku captures the excitement of what psychedelics can offer our species in this time of crisis. What an exhilarating adventure into the heart of the Ancient Mysteries, and the psychedelic key to Eleusis. Somewhere over the rainbow, my dear friend Albert Hofmann is smiling. The secret is out!" ―Amanda Feilding, Founder and Director of the Beckley Foundation

"Like a modern-day Galileo, combining meticulous scholarly analysis with highly rarefied fieldwork, Muraresku is willing to bravely challenge sacred cow orthodoxies, unafraid of where the facts and evidence lead him. He has the standing and erudition to do so. Deftly weaving in humor and contemporary policy, Muraresku’s book is of utmost urgency in the search for what it means to be alive and inevitably die. This page-turner presents the hard archeological evidence substantiating the LSD-like chemical presence in the Eleusinian and Dionysian Mysteries, which carried on for thousands of years, reappearing in democratized form as the Eucharist in the mystery cult of early Christianity before its suppression under the Roman Empire. Here revealed are the true origins of the dominant religion of Western civilization, and the lengths to which its early progenitors went to preserve female spiritual leadership, and the psychedelic sacrament that was their lodestar." ―Sunil Kumar Aggarwal, MD, PhD, Co-Founder and Co-Director, AIMS Institute; Affiliate Assistant Professor of Rehabilitation Medicine and Geography, University of Washington

"Psychedelic Eucharist anyone? This amazing researcher Brian Muraresku has uncovered what has been called the biggest secret in history. Really enjoying reading The Immortality Key, it places the psychedelic truth in more irrefutable historic context." ―Alex Grey, CoSM

"An old-fashioned detective story, like The Da Vinci Code. Except it doesn't suck. And it's about psychedelics." ―Sean Illing, Vox

"Structured as a travel diary, in the style of a real-life Da Vinci Code, The Immortality Key tells the story of a dozen-year quest for Christianity's psychedelic roots. A thorough work, performed assiduously." ―Ido Hartogsohn, Haaretz

“likely to become a classic study… THE IMMORTALITY KEY lands another powerful blow against the logic and rationale of the drug war and offers a cogent argument in favor of the responsible use of entheogens…it’s a ripping read, one that roughly hews to the form of a mystery – or maybe a Dan Brown conspiracy thriller. That’s an awful lot for an author to accomplish in a first book, but Muraresku has done it all deftly, and given the movement for cognitive and religious freedom some great material to work with.” ―Clifton Ross, Quillette