This chapter revisits the "Preface" to Lyrical Ballads and related materials in order to (re)assess Wordsworth's affective poetics in terms both of its own literary-historical moment and of our cognitive-neuroscientific one. Drawing upon research in psychology, narratology, and empirical aesthetics, the discussion elaborates the history and science behind a set of related hypotheses, recently proposed by Keith Oatley et al., concerning "the communication of emotion in art": (1) "emotions often are unclear"; (2) "emotions inspire creative expression"; (3) "artistic expression should often take on the form of emotion [or] have the dynamic and thematic properties of an emotion"; and (4) "readers or spectators of art should readily perceive the emotion communicated."