# Arcesilaus > 3rd-century BC Greek Hellenistic philosopher **Wikidata**: [Q73527](https://www.wikidata.org/wiki/Q73527) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Arcesilaus) **Source**: https://4ort.xyz/entity/arcesilaus ## Summary Arcesilaus was a philosopher born on January 1, 1 BC in Pitane[1]. He died on January 1, 1 BC in Athens. His field was philosophy. ## Summary Arcesilaus was a Greek Hellenistic philosopher from the 3rd century BC, best known for his role in founding the skeptical tradition of the Middle Academy. He is primarily identified as the head of the Academy during a period of philosophical transition, where he shifted its focus toward skepticism. His contributions were instrumental in redefining the philosophical direction of the Academy away from dogmatic Platonism. ## Biography - Born: Unknown (place and date of birth not recorded) - Nationality: Greek - Education: Presumably associated with the Academy in Athens; no specific degrees or institutions mentioned - Known for: Leading the skeptical turn of the Academy and developing philosophical positions that questioned the possibility of certain knowledge - Employer(s): Head of the Platonic Academy in Athens - Field(s): Ancient philosophy, Hellenistic philosophy, epistemology ## Contributions Arcesilaus is known for transforming the philosophical direction of the Academy in the early 3rd century BC by introducing skeptical principles that denied the possibility of certain knowledge. He did not author original works, but his philosophical influence is documented through the testimonies of ancient sources, particularly in the development of Academic Skepticism. His approach shaped the intellectual environment of the Academy to emphasize doubt and critical inquiry over dogmatic assertion. ## FAQs **Where did Arcesilaus study or belong to academically?** Arcesilaus was associated with the Platonic Academy in Athens, where he served as the scholarch (head) and redirected its philosophical focus toward skepticism. **What is Arcesilaus known for?** He is known for leading the skeptical turn of the Platonic Academy, shifting its orientation from the dogmatic teachings of earlier Platonism to a position of epistemic skepticism. **What did Arcesilaus write or publish?** Arcesilaus did not write any surviving original works. His ideas are known through the reports of later ancient authors and his philosophical influence on the Academy. **What is the significance of Arcesilaus in philosophy?** Arcesilaus is significant for introducing skepticism into the Academy, arguing that knowledge is not attainable with certainty, which became a foundational principle of what is now called Academic Skepticism. ## Why They Matter Arcesilaus played a pivotal role in the transformation of the Academy from a dogmatic school of thought to one grounded in skepticism. His leadership marked a major philosophical shift, where he redefined the Academy's intellectual stance to question the possibility of certain knowledge, a move that influenced later philosophical traditions, particularly those of the Academic Skeptics. His ideas were foundational in the development of ancient skepticism, which continued to influence Hellenistic and Roman philosophical discourse. His work also laid the groundwork for later philosophical schools, including the New Academy and Pyrrhonism. ## Notable For - Reviving skepticism within the Platonic Academy - Shifting the Academy's focus from dogmatic Platonism to critical inquiry - Influencing the development of Academic Skepticism - Serving as the head of the Academy (scholarch) - Challenging the possibility of certain knowledge, promoting philosophical skepticism ## Body ### Early Life and Education Arcesilaus was born in Pitane, a town in the region of Aeolis (in modern-day Turkey), and is often referred to as "Arcesilaus of Pitane" to distinguish him from others who shared his name. There is no record of his formal education, but he was clearly trained in the philosophical traditions of the time, likely in Athens, where the Academy was the dominant intellectual institution. ### Career Arcesilaus became the leader of the Platonic Academy around 265 BC, succeeding its previous head. His leadership marked a significant philosophical shift, as he moved the school away from the dogmatic teachings of earlier Platonism and toward a skeptical approach to knowledge. This period of leadership is considered a turning point in the history of the Academy, as it began to embrace the critical spirit of inquiry that would define the New or Middle Academy. ### Philosophical Contributions Arcesilaus is most known for his skeptical turn in the Academy. He argued that certain knowledge is unattainable, and this position led to the development of Academic Skepticism. His approach influenced later philosophical traditions, particularly in the Hellenistic world, where doubt and critical inquiry were emphasized over dogmatic assertion. He did not author original works, but his ideas were preserved in the reports of ancient authors, particularly in the surviving fragments of later commentators. ### Leadership of the Academy Arcesilaus became the scholarch (head of the Academy) around 265 BC and held the position for a significant period. His leadership introduced a new philosophical orientation to the Academy, which had previously been committed to the dogmatic interpretation of Plato. Under his guidance, the Academy began to question the possibility of certain knowledge, marking a shift toward skepticism. This influence was not only philosophical but also historical, as it redefined the character of the Academy for the next several centuries. ### Influence and Legacy Arcesilaus's skeptical turn in the Academy influenced later philosophical schools, particularly the Academic Skeptics and Pyrrhonians. His work laid the foundation for a tradition of philosophical doubt that would persist in various forms through antiquity. His ideas were not preserved in original texts but were recorded by later ancient authors, particularly in the doxographical tradition. His influence is seen in the philosophical movement that questioned the possibility of certain knowledge, a position that would be developed by later Hellenistic philosophers. ### Notable Ideas and Positions Arcesilaus is known for promoting the idea that certain knowledge is unattainable, a position that would define the skeptical turn in the Academy. His approach to knowledge influenced the philosophical environment of the Hellenistic age and was a key element in the development of Academic Skepticism. His ideas were preserved in the reports of ancient authors and influenced later philosophical traditions, particularly those that emphasized doubt and critical inquiry over dogmatic assertion. ## References 1. Q45276090 2. Virtual International Authority File 3. Freebase Data Dumps. 2013 4. CERL Thesaurus 5. Treccani's Enciclopedia on line 6. Treccani Philosophy