Aliens Quote by Neil deGrasse Tyson

I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on…

— Stephen Hawking

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

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

Intelligent life on other planets? I'm not even sure there is on earth!

— Albert Einstein

[In the Universe it may be that] Primitive life is very common and intelligent life is fairly rare. Some would say it has yet…

— Anonymous

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

— Neil deGrasse Tyson

Is there intelligent life on Earth?

— Frank Drake

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

— Young Siddiq Prince

There is intelligent life on Earth, but Im just visiting.

— Anonymous

I believe that there may be intelligent life on other planets.

— Pat Buckley

Perhaps we've never been visited by aliens because they have looked upon Earth and decided there's no sign of intelligent life.

— Neil deGrasse Tyson

If this is the only planet on which not only life, but intelligent life, has arisen, that would be very unusual.

— Seth Shostak