This chapter shows how contemporary reviews of Romantic poetry, and the hostile rhetoric of insanity they used, both stigmatized and popularized the Romantic mad poet. A forensic rhetoric, drawing directly on medical ideas of partial insanity and critical ‘moral management’, was deployed by the periodical press in the first quarter of the nineteenth century—first the quarterlies like the Edinburgh Review and the Quarterly Review, then later new capricious and aggressive magazines such as Blackwood’s, and more quotidian or staid journals—against all of the major Romantic poets. The chapter shows, moreover, how the polemical terms in which Romantic poets were dismissed also held the seeds of their later canonization. The periodical critics, while they used slurs of meaningless insanity to dismiss poetry for political and reactionary ends, also spread the fame of ‘mad genius’, turning a marginalized opinion on the link between creativity and disorder into a cultural phenomenon.