Terence McKenna

Terence McKenna (1946–2000) was an American ethnobotanist, lecturer, and author whose recorded talks on psychedelic plants, language, and consciousness made him an underground figure in the late twentieth century. Born in Paonia, Colorado, he studied shamanism, conservation of natural resources, and ecology at the experimental Tussman College within the University of California, Berkeley, graduating in 1975.

In 1971 he and his brother Dennis traveled to the Colombian Amazon in search of the visionary brew ayahuasca and instead became fascinated with the psilocybin mushrooms growing in cattle pastures at La Chorrera. The trip produced their book The Invisible Landscape (1975) and a method for cultivating Psilocybe cubensis indoors that, published under pseudonyms in 1976, brought psilocybin out of the rainforest and into kitchen closets across North America.

McKenna's most discussed idea was the "stoned ape" hypothesis, advanced in Food of the Gods (1992), which proposed that early hominids' encounters with psilocybin mushrooms on the African savanna accelerated the evolution of human language and self-awareness. Anthropologists were unconvinced, but the argument framed psychedelics as part of human prehistory rather than a 1960s aberration.

Through the 1990s he became a fixture on late-night radio and at countercultural gatherings, speaking in long, comma-rich sentences about novelty, eschatology, and what he called the "transcendental object at the end of time." He died of a rare brain tumor in 2000, after which his recorded talks gained a second life on the early internet.

The name Terence comes from the Roman family name Terentius. He was a smooth-tongued visionary, and his voice still circulates online.