One cannot find out whether or not there's an…

Some pundits have proposed that the aliens have come here to breed with us. Apparently, too much bike riding or something similar has rendered…

— Seth Shostak

In a movie, it's often important to have aliens whose gestures and facial expressions can be 'read' by humans. And in the days before…

— Seth Shostak

For all I know we may be visited by a different extraterrestrial civilization every second Tuesday, but there's no support for this appealing idea.…

— Carl Sagan

I would do it [study UFOs], but before agreeing to do it, we must insist upon full access to discs recovered. For instance in…

— J. Edgar Hoover

In the firm belief that the American public deserves a better explanation than that thus far given by the Air Force, I strongly recommend…

— Gerald R. Ford

Human paleontology shares a peculiar trait with such disparate subjects as theology and extraterrestrial biology: it contains more practitioners than objects for study.

— David Pilbeam

A contact with an extraterrestrial civilization is the greatest challenge for mankind in the Third Millennium. We would finally realize that we are indeed…

— Michael Hesemann

In my official status, I cannot comment on ET contact. However, personally, I can assure you, we are not alone!

— Charles Camarda

“We are so used to the notion of our own inevitability as life’s dominant species that it is hard to grasp that we are…

— Bill Bryson

Clearly, unless thinking beings inevitably wipe themselves out soon after developing technology, extraterrestrial intelligence could often be millions or billions of years in advance…

— Seth Shostak

With control of the universe at stake, a crash program is imperative.We produced the A-bomb, under the huge Manhattan Project, in an amazingly short…

— Donald Keyhoe

I've been asked about UFOs and I've said publicly I thought they were somebody else, some other civilization.

— Gene Cernan

“What hand is holding the voting "trump card" that sold the peoples' souls? It starts with a knowledge of truth and the purpose that…

— Tracey Bond

We all know that UFOs are real. All we need to ask is where do they come from, and what do they want?

— Edgar Mitchell

The evidence is overwhelming that Planet Earth is being visited by intelligently controlled extraterrestrial spacecraft. In other words, SOME UFOs are alien spacecraft. Most…

— Stanton T. Friedman