This volume presents up-to-date insights into the ethical theories of Aristotle's followers, beginning with his colleagues Theophrastus and Eudemus and covering a broad range of figures, topics and applications up to the Imperial Roman period. The ethical work of the Peripatetic school in antiquity included a number of authors who engaged with Aristotle's own legacy as well as emerging Hellenistic schools of philosophy, particularly Stoicism and Epicureanism. Much of the evidence for these views is fragmentary; this book guides readers through Peripatetic ethics in Theophrastus' work and beyond, encompassing a wide selection of philosophers, works and topics. It explores two controversial ethical treatises attributed to Aristotle but arguably not by him (the Eudemian Ethics and the Magna Moralia ); fresh looks at animal and plant ethics in the School of Aristotle; four studies of various aspects of the ethical thought of Theophrastus; and another four studies on Peripatetic ethical thought after Theophrastus, from Hieronymus of Rhodes in the 3 rd century BCE to Aspasius in the 2 nd century CE. Peripatetic Ethics in Theophrastus and After is of interest to students and scholars of ancient Greek philosophy and ethics, particularly Aristotelian ethics and other Peripatetics.