  Thus, if we seek a challenge to direct realist materialism, we must turn to the Three Dialogues, where the character Hylas (the would-be materialist) begins from a sort of naïve realism, according to which we perceive material objects themselves, directly. Against this position, Philonous (lover of spirit—Berkeley’s spokesperson) attempts to argue that the sensible qualities—the qualities immediately perceived by sense—must be ideal, rather than belonging to material objects. (The following analysis of these first dialogue arguments is indebted to Margaret Wilson’s account in “Berkeley on the Mind-Dependence of Colors,” Wilson 1999,  229–242.[10])