Forever Quote by Arthur C. Clarke

The best proof of intelligent life in space is that it hasn't come here.

— Arthur C. Clarke

The best proof that there's intelligent life in the universe is that it hasn't come here.

— Arthur C. Clarke

That intelligent creatures exist in outerspace is proven by the fact that they have not contacted us.

— Loesje

The surest sign that intelligent life exists somewhere else in the universe is that it has never tried to contact us.

— Young Siddiq Prince

The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.

— Bill Watterson

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

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

— Neil deGrasse Tyson

Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us.

— Bill Watterson

Only when science and technology are used with human concern in a world in which all of the earth's resources are held as the…

— Jacque Fresco

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

— Sylvia Earle

The phenomenon of UFO doesn't say anything about the presence of intelligence in space. It just shows how rare it is here on the…

— Arthur C. Clarke

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

— Franklin D. Roosevelt