Stoics over who was Socrates's true heir with regard to ethics. While the Stoics insisted on knowledge-based ethics, Arcesilaus relied on Socratic ignorance. The Stoics' reply to Arcesilaus was that Socratic ignorance was part of Socratic irony (they themselves disapproved the use of irony), an argument that ultimately became the dominant narrative of Socrates in later antiquity. While Aristotle considered Socrates an important philosopher, Socrates was not a central figure in Aristotelian thought. One of Aristotle's pupils, Aristoxenus even authored a book detailing Socrates's scandals. The Epicureans were antagonistic to Socrates. They attacked him for superstition, criticizing his belief in his daimonion and his regard for the oracle at Delphi. They also criticized Socrates for his character and various faults, and focusing mostly on his irony, which was deemed inappropriate for a philosopher and unseemly for a teacher. The Pyrrhonists were also antagonistic to Socrates, accusing him of being a prater about ethics, who engaged in mock humility, and who sneered at and mocked people. Medieval world Socratic thought found its way to the Islamic Middle East alongside that of Aristotle and the Stoics. Plato's works on Socrates, as well as other ancient Greek literature, were translated into Arabic by early Muslim scholars such as Al-Kindi, Jabir ibn Hayyan, and the Muʿtazila. For Muslim scholars, Socrates was hailed and admired for combining his ethics with his lifestyle, perhaps because of the resemblance in this regard with Muhammad's personality. Socratic doctrines were altered to match Islamic faith: according to Muslim scholars, Socrates made arguments for monotheism and for the temporality of this world and rewards in the next life. His influence in the Arabic-speaking world continues to the present day. In medieval times, little of Socrates's thought survived in the Christian world as a whole; however, works on Socrates from Christian scholars such as Lactantius, Eusebius and Augustine were maintained in the Byzantine Empire, where Socrates was studied under a Christian lens. After the fall of Constantinople, many of the texts were brought back into the world of Roman Christianity, where they were translated into Latin. Overall, ancient Socratic philosophy, like the rest of classical literature before the Renaissance, was addressed with skepticism in the Christian world at first. During the early Italian Renaissance, two different narratives of Socrates developed. On the one hand, the humanist movement revived interest in classical authors. Leonardo Bruni translated many of Plato's Socratic dialogues, while