Aliens Quote by Carl Sagan

You're the answer to are we alone in the universe?

— Jonathan Kent

People quite often think of the question 'Are we alone in the universe?' in terms of other civilizations out there: life forms that have…

— Dimitar Sasselov

Human beings have long wondered whether they are alone in the universe.

— Alan Stern

"Are we alone in the universe?" This is a question which goes back to the dawn of history, but for most of human history…

— Paul Davies

Yes, of course. Are you really so arrogant as to believe we are alone in this universe? Millions of stars, and we're supposed to…

— Tom Cruise

Personally, I do not know whether humankind is alone in this vast universe. But I do know that we should cherish our existence on…

— Ban Ki-moon

Human race is all over universe. We are not alone.

— Ashwani Kumar Ojha

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

Maybe our Earth is totally alone in the universe.

— Lucile Hadzihalilovic

[My study of the universe] leaves little doubt that life has occurred on other planets. I doubt if the human race is the most…

— Harold Urey

While NASA talks about 'Are we alone?' as a number one question, they are putting zero money into searching for intelligent life. There's a…

— Frank Drake

I lose sleep at night wondering whether we are intelligent enough to figure out the universe. I don't know.

— Neil deGrasse Tyson