Golden Rule
The Golden Rule is such a hallowed touchstone of civilized behavior that every generation finds new ways to capture its power to inform.
"Do unto others as you would have others do unto you"
"What's good for the goose, is good for the gander"
"What goes around comes around"
"Do not pass judgment until you've walked a mile in another man's shoes"
"There is not a man beneath the canopy of heaven who does not know slavery is wrong; for him" - -Frederick Douglas
Some people live by the Golden Rule, while others need to be reminded. It is amazing how frequently a person will cleave tightly to their opinion as both right, reasonable and applicable to all, only to suddenly realize if their opinion were in the minority, how much they might chafe under the moral certitude of others....
The argument for school prayer usually claims school prayer is so banal as to be a generic plea to a generic god. But, if the proponents of school prayer truly believe their particular version is fair, then (by the Golden Rule) they should not mind if the Pledge of Allegiance says "one nation, under Gods", or "one nation, under the watchful eye of the Earth Mother", or so on. Since presumably this alternative wording might be found offensive by the very people advocating prayer in school, and since there is ample opportunity for organized religion outside of school, and private thoughts throughout the day, prayer should be prohibited in school and in other governmental settings.