From an interview with Jacques Vallee by Jerome Clark (FATE magazine, 1978):
Vallee: I think that’s exactly what we have to do with UFOs. We have to do something that will cause them to react. And I don’t mean building landing strips in the desert and waiting out there to welcome the space brothers.
Clark: But what do you mean?
Vallee: I hesitate to be too specific. I’m speaking, as I’m sure you understand, of the attempted manipulation of UFO manifestations.
Robert Anton Wilson describes meeting Vallee in his excellent Cosmic Trigger:
“Where do you think they come from?” I asked.
Doctor Vallee gave the Gallic form of the classic scientific Not-Speculating-Beyond-The-Data head-shake. “I can theorize, and theorize, endlessly,” he said, “but is it not better to just study the data more deeply and look for clues?”
“You must have some personal hunch,” I insisted.
He gave in gracefully. “They relate to space-time in ways for which we have, at present, no concepts,” he said. “They cannot explain to us because we are not ready to understand.”
I asked Grady McMurty if Aleister Crowley had ever said anything to him implying the extraterrestrial theory which Kenneth Grant, Outer Head of another Ordo Templi Orientis, implies in his accounts of Crowley’s contacts with Higher Intelligences.
“Some of the things Aleister said to me,” Grady replied carefully, “could be interpreted as hints pointing that way.” He went on to quote Crowley’s aphorisms about various of the standard entities contacted by Magick. The Abramelin spirits, for instance, need to be watched carefully. “They bite,” Aleister explained in his best deadpan am-I-kidding-or-not? style. The Enochian “angels,” on the other hand, don’t always have to be summoned. “When you’re ready, they come for you,” Aleister said flatly.
For an in-depth interview with Vallee see this archived link from the lost website of the enigmatic Internet UFO legend known as Brother Blue.