Have there been any efforts to quantify what level of inequality is reasonable? For instance, the GINI coefficient ranges between 0 and 1, where 0 means everyone has the same amount, and 1 means one person at the top has everything. Depending on how it's measured, the US is somewhere between 0.4 and 0.5. You don't want to be at either extreme, so some level of inequality is desirable. Is there an appropriate amount o…
Rawls argued that whenever inequality would allow the worst off to be better off in absolute terms, then it was okay. He gave a thought experiment argument for this that he called the original position: https://en.wikipedia.org/wiki/Original_position
Basically, if everyone controls their envy, the good kind of inequality that improve the worst off in absolute terms only really happens if you are tolerant of inequality by condemning acts of envy.
One could argue that at least two Judeo-Christian values have lead to the stability and prosperousness of the Western World. Not envying your neighbor is one. The second is forgiveness, which prevents society from getting trapped into feuds with one another indefinitely and wasting resources on perpetuating conflict.