[The search for secret/hidden/lost knowledge still goes on today, with a special emphasis on drug use, including the restoration of knowledge of plant use by other cultures which was in many cases concealed in the contact with European who strongly disapproved of “pagan” practices. Terence McKenna and his brother worked to those ends in the second half of the twentieth century. Both DMT and Psilocybin are powerful entheogens. DMT and harmine are in plants which feature in the Bible – Acacia and Syrian Rue.]

After the partial completion of his studies, and his mother’s death from cancer in 1971, McKenna, his brother Dennis, and three friends traveled to the Colombian Amazon in search of oo-koo-hé, a plant preparation containing dimethyltryptamine (DMT). Instead of oo-koo-hé they found fields full of gigantic Psilocybe cubensis mushrooms, which became the new focus of the expedition. In La Chorrera, at the urging of his brother, McKenna was the subject of a psychedelic experiment in which the brothers attempted to bond harmine (harmine is another psychedelic compound they used synergistically with the mushrooms) with their own neural DNA, through the use of a set specific vocal techniques. They hypothesised this would give them access to the collective memory of the human species, and would manifest the alchemists’ Philosopher’s Stone which they viewed as a “hyperdimensional union of spirit and matter”. McKenna claimed the experiment put him in contact with “Logos”: an informative, divine voice he believed was universal to visionary religious experience.

Pasted from <https://en.wikipedia.org/wiki/Terence_McKenna#Studying_and_traveling>