John Nichols's eulogy for Mario Cuomo at The Nation is the best I've yet read. I like how Nichols gets that Cuomo's political vision was deeply informed by a Catholic vision of the common good on which Cuomo continued to insist even as his political party, at a national level and under several popular Democratic presidents, moved decisively to the "center" (that is, to the right) and endorsed neoliberal socioeconomic ideas that left working- and even middle-class Americans out in the cold.
