Nelson Mandela once remarked that he befriended his jailers, those grim, khaki-clad overseers of his decades of hard labor in a limestone quarry, by “exploiting their good qualities.” Asked if he believed all people were kind at their core, he responded, “There is no doubt whatsoever, provided you are able to arouse their inherent goodness.” If that sounds like wishful thinking, well, he actually did it.

For at the center of all spiritual traditions is the beacon of a truly radical proposal: Open your heart to everybody. Everybody.