“Taking readers along on his fascinating journey, the author emphasizes the interconnectivity of the self and Mother Earth, drawing connections between his own C-PTSD and the complex being that humans are actively destroying with our ‘gimme-gimme, carbon-belching society.’… Wrenn paints a vivid image of a dying planet at the hands of humans—not as an issue of tomorrow, but as the current consequence of our daily actions and inactions, a form of trauma all its own…. A memorable book that capably interweaves the personal and the universal.”

– Kirkus Reviews

“A brave, beautiful testament to love both past and present, a meticulously researched account of our relationship to ourselves and the world…. Mothership does for coral what Richard Powers’s The Overstory does for trees. I can’t wait to assign this to my students.”

– Garrard Conley, New York Times bestselling author of Boy Erased

“A powerful testimonial and call to action to save the equal opportunity healer that is Mother Nature.”

– Carine McCandless, author of The Wild Truth, the New York Times bestselling follow-up to Into the Wild

“As humanity stands at the crossroads of catastrophe and consciousness, Wrenn’s wonder-filled, carefully researched memoir makes a strong case for not only the sacramental value and healing power of psychedelics but also for safe, legal access to psychedelic-assisted therapy for PTSD. Mothership is a deeply moving roadmap through the intertwined destinies of individual well-being and the urgent need to heal our planet.”

– Rick Doblin, PhD, Founder and President of the Multidisciplinary Association for Psychedelic Studies (MAPS)

“A deeply felt, clear-eyed memoir examining what it means to grieve nature’s losses and yet still manage to find healing and love in what remains.”

– Florence Williams, author of The Nature Fix and Heartbreak: A Personal and Scientific Journey

“Mothership is a story of personal and, hopefully, global healing. With rare insight, Wrenn captures a mystical reciprocity with the natural world that leads to a love affair with all life he encounters under the sea. At the same time, he is learning, painfully and little by little, to love himself and to be loved. The turning point in his memoir is his encounter with the spirit of ayahuasca, Madre Ayahuasca. Wrenn elegantly describes his own emotional journey as well as the psychological process of working with this powerful psychedelic medicine. Mothership, a story of how healing happens after a traumatic childhood, is an important contribution to the growing field of psychedelic study."

– Rachel Harris, PhD, author of Listening to Ayahuasca and Swimming in the Sacred

“Greg’s life story and spiritual journey are one of the greatest examples of the power that ayahuasca and plant medicines have to bring about personal transformation. The first time I met Greg, he had a crippling fear of life. Through a deep commitment to self-healing, he has transmuted this fear into a full embrace with life itself. A raw, real, and riveting personal story, Mothership brings the reader on a journey through the darkness of deep traumas, woundings, and addictions into the light of divine consciousness. Page by page, we witness a transformation from being broken to becoming whole once again.”

– Alanna Collins, RN, co-founder of Truth is One Interfaith Church, kambo & plant medicine facilitator