Catullus’ collection contains several clear echoes of the work of two contemporary Epicurean poets, Lucretius and Philodemus. Indeed, several of the neoteric poet’s central themes (the attractions of otium and disengagement from public life; patronage by members of the high elite and its pitfalls; dissatisfaction with the mos maiorum) bring him potentially into close alignment with Epicurean ideals. In this chapter, however, I argue that, on closer consideration, Catullus’ intertextual engagement with his two contemporaries points rather to a self-consciously antagonistic stance towards Epicurean ethics. Catullus’ attack on ‘Socration’ in Poem 47, combined with parodic echoes of Philodemus’ epigrams in Poems 13 and 43, bears comparison with Cicero’s deployment of anti-Epicurean clichés in the In Pisonem; similarly, Philodemean and Lucretian echoes underline a striking divergence both from Epicurean ideals of friendship and from the rejection of romantic love explicit in Lucretius and arguably implicit in Philodemus’ Xanthippe cycle.