This article argues that Modernism was the pivotal “ghost” at Vatican II. Evocations
of Modernism and anti-Modernist doctrinal documents on the council floor were
numerous and often heated. Such evocations occurred in virtually every debate
where the development of doctrine was at stake. The council majority’s dismissal,
indeed rejection, of the anti-Modernist paradigm constituted a kind of revolution of
theological methodology. Understanding how anti-Modernist doctrinal documents
were evoked at Vatican II sheds important light on the council and its achievements,
compromises, and failures.

This article explores the evocations of the Synod of Pistoia (1786) at Vatican II, arguing that Pistoia was a “ghost” on the council floor, that is, a key moment in the Church’s collective memory which influenced drafting and debate. This is apparent in Bishop Carli’s evocation of Auctorem Fidei (the 1794 bull condemning Pistoia) during debates surrounding the theology of the episcopacy. This article concludes by arguing that the historical contextualization of Pistoia by figures like Cardinal Silva Henríquez was ultimately successful, as Auctorem Fidei did not exert a strong “controlling function” over Vatican II’s ecclesiological debates.