Quote by Carl Sagan

It seems to me far more likely that an advanced civilization would communicate inter dimensionally and telepathically.

— Terence McKenna

The problem here is that a civilization that is 1,000 light years away doesn't know we exist. They don't know that we have radio…

— Paul Davies

I think it quite likely that we are the only civilization within several hundred light years; otherwise we would have heard radio waves.

— Stephen Hawking

If we ever established contact with intelligent life on another world, there would be barriers to communication. First, they would be many light years…

— Martin Rees

It could be that these other civilizations, if they are far more advanced intellectually than we are, would not even measure our existence as…

— Neil deGrasse Tyson

Advanced technology does not always promise a more intelligent civilization. On the contrary, the more the common people rely on technology to do their…

— Criss Jami

That would be such a life-changing thing, for us all to know that there are other beings out there who we could potentially communicate…

— Paul Allen

Think of our DNA. In the last million years, our DNA hasn't changed at all. It's really much the same as it was in…

— Stephen Hawking

The more technologically advanced our society becomes, the more we need to go back to the basic fundamentals of human communication.

— Angela Ahrendts

Radio astronomers are aware in the back of their minds that if there are other civilizations out there in space, it might be the…

— Jocelyn Bell Burnell

It's abundantly clear that we already have extraterrestrials living among us, and people are stepping forward who can communicate with them.

— Sylvia Browne

Perhaps the inevitable tragedy of our complex civilization is that we must be specialists in our fields - and our fields have become increasingly…

— Joyce Carol Oates