What an alien might say if he came to Earth:
"Humans, as a species, are constantly, and in every way, comparing themselves to one another, which, given the brief nature of their existence, seems an oddity and, for that matter, a waste. Nevertheless, this is the driving influence behind every human's social development, their emotional health and sense of joy, and, sadly, their greatest tragedies. It is as though something that helped them function and live well has gone missing, and they are pining for that missing thing in all sorts of odd methods, none of which are working. The greater tragedy is that very few people understand that they have the disease. This seems strange as well because it is obvious. To be sure, it is killing them, and yet sustaining their social and economic systems. They are an entirely beautiful people with a terrible problem."
God wired us so that He told us who we were, and outside that relationship, the relationship that said we were loved and valuable and beautiful, we didn't have any worth at all. As horrible as it sounds, it would make sense that things of worth are the things God loves, and things that don't have worth are things God doesn't love. I mean, I really started wondering if maybe a human is defined by who loves him. I know it sounds terrible, because we have always grown up believing that a person is valuable even if nobody loves them, and I certainly agree with that because God made everybody and the Bible very clearly states that He loves everybody. But, as Paul said, if those relations are disturbed, the relations between God and man, then we feel the desire to be loved and respected by other people instead of God, and if we don't get that love and respect, we feel very sad or angry because we know our glory is at stake, that if their isn't some glory being shone through us by somebody, we'll be dead inside, like a little light will go out and our souls will feel dark, like nothing can grow there. We'll feel that there is a penalty, by default, for being removed from love.
Donald Miller, "Searching For God Knows What".