"And what is shamanism but philosophy with a hands-on attitude. Philosophy not made around the camp fire, but philosophy based on the acquisition of extreme experience. That's how you figure out what the world is, not by bicycling around in the burbs, but by forcing extreme experience."

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We can no longer have forbidden areas of the human mind, or cultural machinery. We have taken upon ourselves the acquisition of so much power that we now must understand what we are. We cannot travel much further with the definitions of man that we inherit from the Judeo-Christian tradition. We need to truly explore the problem of consciousness.

— Terence McKenna