This chapter offers a close analysis of five arguments from Plato’s Republic that are central to the dialogue’s treatment of δόξα and its relation to knowledge. The first, The Departure Argument (Book III, 412e–413c), though often overlooked in research, provides a valuable link to the Meno by addressing the (in)stability of belief and showing the continued significance of the notion of δόξα as presented in the earlier dialogue in the Republic. The Dreaming Argument (Book V, 475e–476d) and The Objects Argument (Book V, 476e–479d), embedded within the rich passage 474b–480a, are then examined. While the former presupposes acceptance of the theory of Forms, the latter proceeds from more widely accepted premises. The fourth and fifth arguments, The Divided Line (Book VI, 509d–511e) and The Allegory of the Cave (Book VI, 514a–521b), further develop the epistemological framework by illustrating the correlation between the ontological and epistemic realms and by metaphorically describing the ascent to knowledge.