In 1963, as a graduate student at the University of Chicago, I wrote a master's thesis on the antecedents of 1921 Kongo prophetism (ngunzisme, after the KiKongo for prophet, ngunza; "Kimbanguism," after the name of the most prominentfprophet, Simon Kimbangu). The thesis pieced together accounts of traditional and new urban cults which sought, through purification and initiation, to fashion an i...