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“The central question in the analysis of the UFO phenomenon has always been that of the controlling intelligence behind the objects' apparently purposeful behavior. For the time being, let me simply state again that the modern, global belief in flying saucers and their occupants is identical to an earlier belief in the Good People. The entities described as the pilots of the craft are indistinguishable from the elves, sylphs, and lutins of the Middle Ages. Through the observations of unidentified flying objects, we are concerned with an agency our ancestors knew well and regarded with awe: we are prying into the affairs of the Secret Commonwealth.”
― Jacques F. Vallée, Dimensions: A Casebook of Alien Contact