Religion
In reply to the discussion: Why Did So Many Christians Support Slavery? [View all]MineralMan
(150,484 posts)The rule of reciprocity was independently recognized by virtually every known culture. Not followed, necessarily, but recognized as a universal behavioral standard.
We know it in the West as The Golden Rule:
https://en.wikipedia.org/wiki/Golden_Rule
However, it is a universal understanding by thinking people.
It is often not honored, however, through dehumanizing foreigners, strangers, and people of different races. That is the excuse given for slavery. The ethical principle, though, still applies, but gets modified to suit cultural needs.
I maintain that the principle of reciprocity is the primary and universal foundation for all ethics. I do not expect that principle to be followed, of course. It obviously is not and has not been followed. It remains, however, the root of all ethical and moral behavior.