A significant part of Pettazzoni's work was devoted to refuting the theory of primordial monotheism (Urmonotheismus) developed by Schmidt and the study of supreme beings of primitive religions.
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During his clerical studies struggled against Catholic Church's monopoly on religious studies in Italy and against such anti-clerical secularist academics as Benedetto Croce who held the study of religions to be an academically lazy and uninteresting discipline.
Raffaele Lauro | Raffaele Piria | Raffaele Marcellino | Raffaele Ganci | Raffaele Cutolo | Raffaele Costa | Raffaele Cecco | Joseph Raffaele |