James E. Hansen

“Could it be that God was an extra-terrestrial? What do we mean when we say that heaven is in the clouds? From Jesus Christ to Elvis Presley, every culture tells us of high-flying bird men who zoom around the world creating magnificent works of art and choosing willing followers to share in the eternal glory from beyond the stars. Can all these related phenomena merely be dismissed as coincidence?”
― Erich von Daniken, Chariots of The Gods

“Those Who From Heaven To Earth Came". They landed on Earth, colonized it, mining the Earth for gold and other minerals, establishing a spaceport in what today is the Iraq-Iran area, and lived in a kind of idealistic society as a small colony.

They returned when Earth was more populated and genetically interfered in our indigenous DNA to create a slave-race to work their mines, farms, and other enterprises in Sumeria, which was the so-called Cradle of Civilization in out-dated pre-1980s school history texts. They created Man, Homo Sapiens, through genetic manipulation with themselves and ape man Homo Erectus.”
― Zecharia Sitchin

“from publicly available documents. But now it is also evident that when the mists of leaks, rumors, and denials are pierced, if not the public, then the world's leaders have been aware for some time first, that there is one more planet in our Solar System and second, that we are not alone.”
― Zecharia Sitchin, Genesis Revisited: Is Modern Science Catching Up With Ancient Knowledge?