Consider the following ‘principles’:
(Norm of Belief Schema) Necessarily, a belief of <p> is correct (relative to some scenario) if and only if p (at that scenario) — where ‘p’ has the aforementioned content <p>.
(Generalized Norm of Belief) Necessarily, for all propositions <p>, a belief of p> is correct (relative to some scenario) if and only if <p> is true (at that scenario).
Both ‘principles’ appear to capture the aim(s) of belief. (NBS) particularizes the aims to beliefs of distinct content-types. (GNB) generalizes these aims of beliefs as truth. Properly understood, the instances of (NBS) appear to be at least approximately true as does (GNB). Of course, one might harbor concerns about whether these are mere appearances or whether these ‘principles’ are properly formulated. Putting such concerns aside, one might naturally wonder how these two ‘principles’ (or their proper reformulations) are fundamentally related. More specifically, are the instances of (NBS) explanatorily basic if they are true?