"It's like there's this predator energy on this planet, and this predator energy feeds upon the essence of the spirit, feeds upon the essence of the human being, the spirit. This predator energy can take fossil fuel and other resources out of the Earth, turn it into fuel, to run a machine system. But in order for there to be a need for that system, and in order for that system to work, they have to mine our minds to get at the essence of our spirit. In the same way the external mining takes place, it pollutes—we see now, people understand how it poisons the environment, the water, the air pollution—the mining of the essence, the mining of the spirit, mining our minds ... the pollution from that is all the neurotic, distorted, insecure behavior patterns that we develop. That's the pollution. Because in order for this predatory system, this disease, to work, we must not be able to use our minds in a clear coherent manner. Because if we use our minds in a clear coherent manner, we will not accept the unacceptable."
January 1, 1970
https://en.wikiquote.org/wiki/John_Trudell