The Human Arrogance

It goes both ways. There's the arrogance that states that we humans are so unique, the very thought of anything better could only exist in some planetary kingdom so incredibly far away that we will never know of them, or they us- so for all practical purposes, they might as well not exist. That same aura of superiority also extends to our own blue sphere, where only the human species seemingly possesses the intellect for self awareness, emotion and ritual. 

Astronomers and astrophysicists readily admit they cannot account for 90% of the very stuff that constitutes the universe itself, yet still laugh and scoff at the very notion that ancient civilizations with technologies vastly surpassing ours could visit our domain as easily we visit the depths of our ocean floor- or the neighborhood termite mound...

"The missing mass problem is extremely disquieting...We are talking about 90 percent of the mass of the universe, present but not speaking. Can we really claim to know anything about the nature of the universe if we don't know the properties, or even the nature, of 90 percent of its material?"   -Prof. Ivan King