“All the peoples in the world who talk of a cosmic serpent have been saying as much for millennia. He had not seen it because the rational gaze is forever focalized and can examine only one thing at a time. It separates things to understand them, including the truly complementary. It is the gaze of the specialist, who sees the fine grain of a necessarily restricted field of vision. ”

“During this investigation, I became familiar with certain limits of the rational gaze. It tends to fragment reality and to exclude complementarity and the association of contraries from it's field of vision...The rational approach starts from the idea that everything is explainable and that mystery is in some sense the enemy. This means that it prefers pejorative, and even wrong, answers to admitting its own lack of understanding.”

“One thing became clear as I thought back to my stay in Quirishari. Every time I had doubted one of my consultants' explanations, my understanding of the Ashaninca view of reality had seized up; conversely, on the rare occasions that I had managed to silence my doubts, my understanding of local reality had been enhanced — as if there were times when one had to believe in order to see, rather than the other way around.”

“Shamanism resembles an academic discipline (such as anthropology or molecular biology); with its practitioners, fundamental researchers, specialists, and schools of thought it is a way of apprehending the world that evolves constantly. One thing is certain: Both indigenous and mestizo shamans consider people like the Shipibo-Conibo, the Tukano, the Kamsá, and the Huitoto as the equivalents to universities such as Oxford, Cambridge, Harvard, and the Sorbonne; they are the highest reference in matters of knowledge. In this sense, ayahuasca-based shamanism is an essentially indigenous phenomenon. It belongs to the indigenous people of Western Amizonia, who hold the keys to a way of knowing that they have practiced without interruption for at least five thousand years. In comparison, the universities of the Western world are less than nine hundred years old.”

“Nonetheless, gazing out the train window at a random sample of the Western world, I could not avoid noticing a kind of separation between human beings and all other species. We cut ourselves off by living in cement blocks, moving around in glass-and-metal bubbles, and spending a good part of our time watching other human beings on television. Outside, the pale light of an April sun was shining down on a suburb. I opened a newspaper and all I could find were pictures of human beings and articles about their activities. There was not a single article about another species. ”

“When I started reading the literature of molecular biology, I was stunned by certain descriptions. Admittedly, I was on the lookout for anything unusual, as my investigation had led me to consider that DNA and its cellular machinery truly were an extremely sophisticated technology of cosmic origin. But as I pored over thousands of pages of biological texts, I discovered a world of science fiction that seemed to confirm my hypothesis. Proteins and enzymes were described as 'miniature robots,' ribosomes were 'molecular computers,' cells were 'factories,' DNA itself was a 'text,' a 'program,' a 'language,' or 'data.' One only had to do a literal reading of contemporary biology to reach shattering conclusions; yet most authors display a total lack of astonishment and seem to consider that life is merely 'a normal physiochemical phenomenon.”

“This is perhaps one of the most important things I learned during this investigation: We see what we believe, and not just the contrary; and to change what we see, it is sometimes necessary to change what we believe.”