The Search for the Original Tree of Knowledge A Radical History of Plants, Drugs, and Human Evolution
Food of the Gods (1992) by Terence McKenna is an exploration of how psychoactive plants and substances have shaped human evolution, culture, and spirituality.
McKenna proposes that early humans’ consumption of psychedelic mushrooms—particularly psilocybin-containing species—may have influenced the development of language, imagination, and self-awareness, a hypothesis often referred to as the “Stoned Ape Theory.” He argues that throughout history, plant-based psychedelics played a central role in shamanism, religion, and communal ritual, fostering social cohesion and visionary insight.
The book also critiques modern society’s relationship with drugs, distinguishing between natural psychedelics, which McKenna sees as consciousness-expanding, and addictive substances like alcohol and refined sugar, which he argues contribute to hierarchy, repression, and cultural stagnation. He contends that the suppression of psychedelic experience parallels the rise of authoritarian structures and disconnection from nature.
Ultimately, Food of the Gods presents a provocative thesis: that reclaiming a responsible, respectful relationship with entheogenic plants could help restore creativity, ecological awareness, and spiritual depth in contemporary culture.
