Across several texts, Epicurus memorably and accessibly summarizes his doctrines. This study systematically analyzes Epicurus’ acts of summary, thereby closing a long-standing scholarly lacuna. To this end, a review of existing research is followed by an analysis of the terminology used in antiquity to designate philosophical and scientific compendia. The Epicurean sources are then surveyed chronologically. In two further chapters, Epicurean compendia are discussed in the broader context of ancient philosophical summaries. Their patterns of genre are illuminated not only on the basis of Epicurus’ own remarks but through related texts, in which authors explain the principles undergirding their own ‘poetics of abridgement’. The concluding chapter advances an updated summary of Epicurus’ fragmentary "On Nature", interpreting his compendia not merely as sources for reconstructing the main treatise, but as texts with literary value in their own right. This monograph therefore provides the first complete presentation of Epicurean philosophical compendia, arguing for an interpretation of the rhetoric of philosophical texts while also being informed by metaliterary details afforded by other ancient sources.