"I first came upon this extension of ecumenism into pan-deism among some Roman Catholic scholars interested primarily in the "reunion of the churches," Roman, Orthodox, Anglican." . . . . "We may perhaps ask what is the ultimate aim of the Curia in promoting the pan-deist movement." Father Charles A. Bolton in "Beyond the Ecumenical: Pan-deism?" in Christianity Today, 1963, page 21.
Source: wiktionary