Christianity is, I believe, about expanded life, heightened consciousness and achieving a new humanity. It is not about closed minds, supernatural interventions, a fallen creation, guilt, original sin or divine rescue.
The first fundamental of successful city life: People must take a modicum of responsibility for each other even if they have no ties to each other. This is a lesson no one learns by being told. It is learned from the experience of having other people without ties of kinship or close friendship or formal responsibility to you take a modicum of responsibility for you.