Aliens Quote by Neil deGrasse Tyson

I hope that someday we will find evidence that there is intelligent life among humans on this planet.

— Sylvia Earle

For all we know, the aliens have already done this and unwittingly concluded that there was no intelligent life on Earth. They would now…

— Neil deGrasse Tyson

It would be selfish to believe that we are the only intelligent life in the universe.

— Kerli

I wonder if, in fact, we have been observed by aliens and upon close examination of human conduct and human behavior they have concluded…

— Neil deGrasse Tyson

The chances of human beings being the only intelligent form of life in the universe are so minuscule that it's really kind of crazy…

— Zoltan Istvan

We only have to look at ourselves to see how intelligent life might develop into something we wouldnt want to meet. I imagine they…

— Stephen Hawking

It should not surprise us that there must be other civilizations in our galaxy and throughout the entire universe.

— Robert K. G. Temple

Intelligent life can't be all that common because it's really rare on Earth and especially since we define ourselves to be intelligent. But in…

— Neil deGrasse Tyson

I don't see why there is no intelligent alien life in the universe.

— Neil deGrasse Tyson

Coming to grips with the reality that our planet is not the only one harboring intelligent life the universe.

— Franklin D. Roosevelt

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

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