This chapter explores how the Momus myth and the Lucifer story interpenetrated in the early modern period, tracing the possible lines of influence from Leon Battista Alberti and Giovan Battista Andeini to Milton, who modeled Paradise Lost on Andreini's L'Adamo (itself shaped by Andreini's Dialogo fra Momo e Verità) and likely drew upon Alberti's Momus (as a result of his stay in Italy in 1638-39). It also considers the likely influence of Thomas Carew's Coelum Britannicum (1634), which featuring Momus as a starring character, is a playful version of Giordano Bruno's Expulsion of the Triumphant Beast. The aim of this chapter is to offer new insight as to why Milton made Lucifer the star of his epic and what this reveals about the nature of Milton's belief not only in Paradise Lost but also in Paradise Regained and Samson Agonistes.