Happiness
"We are all the same" say the priests, "for do we not all seek happiness?" True enough, except for the small matter that we people seek happiness in totally different and conflicting ways! Yes, we are the same alright - if only this sameness were not our blindness!
"Religion is the sigh of the oppressed creature in a heartless world. It is the soul of soulless conditions. Religion is the opium of the people." Marx