Recently scholars have discovered a diary entry of Arthur Norman Prior dated the 25 March 1942 (Prior in The Nachlass of A.N. Prior, 2014a), in which Prior is reflecting on his own views and attitudes towards theology. The purpose of the present article is to consider what the diary entry can teach us about this period of transition in Prior’s life, and its effects upon his philosophical interests. This article will argue that the diary entry provides an explanation for why theology continued to be significant in Prior’s work.