Pyrrhonism is a school of philosophical skepticism founded by Pyrrho in the fourth century BCE. It is best known through the surviving works of Sextus Empiricus, writing in the late second century or early third century CE.
History
Pyrrho of Elis (c. 360 - c. +more
Pyrrhonism as a school was either revitalized or re-founded by Aenesidemus in the first century BCE. This phase of Pyrrhonism, starting with Aenesidemus and going through the last known Pyrrhonist of antiquity, Saturninus, is sometimes referred to as "neo-Pyrrhonism. +more
Although Cicero, Seneca the Younger, and Julian the Apostate each mention that Pyrrhonism had died out at the time of their writings, other writers mention the existence of Pyrrhonists. Aenesidemus was a contemporary of Cicero. +more
The recovery and publishing of the works of Sextus Empiricus in the sixteenth century ignited a revival of interest in Pyrrhonism.
Philosophy
Pyrrhonism is the earliest Western form of philosophical skepticism. As with other Hellenistic philosophies such as Stoicism, Peripateticism and Epicureanism, eudaimonia is the Pyrrhonist goal of life. +more
Although Pyrrhonism's objective is eudaimonia, it is best known for its epistemological arguments, particularly the problem of the criterion, and for being the first Western school of philosophy to identify the problem of induction and the Münchhausen trilemma.
Pyrrhonists (or Pyrrhonist practice) can be subdivided into those who are ephectic (engaged in suspension of judgment), zetetic (engaged in seeking), or aporetic (engaged in refutation).
Practice
Pyrrhonist practice is for the purpose of achieving epoché, i. e. +more
The ten modes of Aenesidemus
Aenesidemus is considered the creator of the ten tropes of Aenesidemus (also known as the ten modes of Aenesidemus)-although whether he invented the tropes or just systematized them from prior Pyrrhonist works is unknown. Sextus Empiricus attributed them simply to the earlier Pyrrhonists. +more
# "The same impressions are not produced by the same objects owing to the differences in animals. " # The same impressions are not produced by the same objects owing to the differences among human beings. +more
Superordinate to these ten modes stand three other modes: # that based on the subject who judges (modes 1, 2, 3 & 4). # that based on the object judged (modes 7 & 10). +more
Superordinate to these three modes is the mode of relation.
The five modes of Agrippa
These "tropes" or "modes" are given by Sextus Empiricus in his Outlines of Pyrrhonism. According to Sextus, they are attributed only "to the more recent skeptics" and it is by Diogenes Laërtius that we attribute them to Agrippa. +more
# Dissent - The uncertainty demonstrated by the differences of opinions among philosophers and people in general. # Progress ad infinitum - All proof rests on matters themselves in need of proof, and so on to infinity, i. +more
According to the mode deriving from dispute, we find that undecidable dissension about the matter proposed has come about both in ordinary life and among philosophers. Because of this we are not able to choose or to rule out anything, and we end up with suspension of judgement. +more
With reference to these five tropes, that the first and third are a short summary of the earlier Ten Modes of Aenesidemus. The three additional ones show a progress in the Pyrrhonist system, building upon the objections derived from the fallibility of sense and opinion to more abstract and metaphysical grounds.
According to Victor Brochard “the five tropes can be regarded as the most radical and most precise formulation of skepticism that has ever been given. In a sense, they are still irresistible today. +more
Criteria of action
Pyrrhonist decision making is made according to what the Pyrrhonists describe as the criteria of action holding to the appearances, without beliefs in accord with the ordinary regimen of life based on: # the guidance of nature, by which we are naturally capable of sensation and thought # the compulsion of the pathé by which hunger drives us to food and thirst makes us drink # the handing down of customs and laws by which we accept that piety in the conduct of life is good and impiety bad # instruction in crafts and the arts
Skeptic sayings
The Pyrrhonists devised several sayings (Greek ΦΩΝΩΝ) to help practitioners bring their minds to epoche. Among these are:
* Not more, nothing more (a saying attributed to Democritus) * Non-assertion * Perhaps, it is possible, maybe * I withhold assent * I determine nothing (Montaigne created a variant of this as his own personal motto, "Que sçay-je?" - "what do I know?") * Everything is indeterminate * Everything is non-apprehensible * I do not apprehend * To every argument an equal argument is opposed
Connections with other philosophies
Academic Skepticism
Pyrrhonism is often contrasted with Academic Skepticism, a similar but distinct form of Hellenistic philosophical skepticism. Dogmatists claim to have knowledge, Academic Skeptics claim that knowledge is impossible, while Pyrrhonists assent to neither proposition, suspending judgment on both. +more
". +more
Following the death of Timon, the Platonic Academy became the primary advocate of skepticism until the mid-first century BCE. While early Academic Skepticism was influenced in part by Pyrrho, it grew more and more dogmatic until Aenesidemus broke with the Academics to revive Pyrrhonism in the first century BCE, denouncing the Academy as "Stoics fighting against Stoics. +more
Buddhism
The summary of Pyrrho's teaching preserved in the "Aristocles passage" shows signs of Buddhist philosophical influence. This text is:
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According to Christopher I. +more
Other similarities between Pyrrhonism and Buddhism include a version of the tetralemma among the Pyrrhonist maxims and a parallel with the Buddhist Two Truths Doctrine. In Pyrrhonism the Buddhist concept of "ultimate" (paramārtha) truth corresponds with truth as defined via the criterion of truth, which in Pyrrhonism is seen as undemonstrated, and therefore nothing can be called "true" with respect of it being an account of reality. +more
Nagarjuna's Madhyamaka philosophy is particularly similar to Pyrrhonism. According to Thomas McEvilley this is because Nagarjuna was likely influenced by Greek Pyrrhonist texts imported into India.
Texts
Except for the works of Sextus Empiricus and Diogenes Laërtius, the texts about ancient Pyrrhonism have been lost, except for a summary of Pyrrhonian Discourses by Aenesidemus, preserved by Photius, and a summary of Pyrrho's teaching preserved by Eusebius, quoting Aristocles, quoting Pyrrho's student Timon, in what is known as the "Aristocles passage."
Symbols
The balance scale, in perfect balance, is the traditional symbol of Pyrrhonism. The Pyrrhonist philosopher Montaigne adopted the image of a balance scale for his motto.
Influence
Pyrrhonism so influenced Arcesilaus, the sixth scholarch of the Platonic Academy that Arcesilaus reformed the teaching of the Academy to be nearly identical to Pyrrhonism thus initiating the Academic Skepticism of the Middle Academy.
The Pyrrhonist school influenced and had substantial overlap with the Empiric school of medicine. Many of the well-known Pyrrhonist teachers were also Empirics, including: Sextus Empiricus, Herodotus of Tarsus, Heraclides, Theodas, and Menodotus. +more
Because of the high degree of similarity between the Buddhist philosopher Nagarjuna's Madhyamaka philosophy and Pyrrhonism, particularly as detailed in the surviving works of Sextus Empiricus, Thomas McEvilley suspects that Nagarjuna was influenced by Greek Pyrrhonist texts imported into India.
Pyrrhonism began to regain prominence starting in the late fifteenth century and the sixteenth century. The publication of the works of Sextus Empiricus, particularly a widely influential translation by Henri Estienne published in 1562, played a major role in Renaissance and Reformation thought. +more
It has also been suggested that Pyrrhonism provided the skeptical underpinnings that René Descartes drew from in developing his influential method of Cartesian doubt and the associated turn of early modern philosophy towards epistemology. The Pyrrhonian formulation of skepticism would also go on to have a considerable influence on David Hume.
Pyrrhonism also affected the development of historiography. Historical Pyrrhonism emerged during the early modern period and played a significant role in shaping modern historiography. +more
A revival of the use of "Pyrrhonism" as a synonym for "skepticism" occurred during the seventeenth century.
Fallibilism is a modern, fundamental perspective of the scientific method, as put forth by Karl Popper and Charles Sanders Peirce, that all knowledge is, at best, an approximation, and that any scientist always must stipulate this in her or his research and findings. It is, in effect, a modernized extension of Pyrrhonism. +more
Scholarchs
Diogenes Laërtius recorded the following list of scholarchs of the Pyrrhonist school of philosophy.
326-270 BCE Pyrrho
270-235 Timon of Phlius
???-??? Euphranor of Seleucia
???-??? Eubulus of Alexandria
???-??? Ptolemy of Cyrene
c. 100 Heraclides of Tarentum
c. 50 Aenesidemus
???-??? Zeuxippus
???-??? Zeuxis
???-??? Antiochus of Laodicea on the Lycus
c 100 CE Menodotus of Nicomedia
c. 120 Herodotus of Tarsus
c. 160 Sextus Empiricus
c. 200 Saturninus
List of Pyrrhonist philosophers
Ancient Pyrrhonists
Aenesidemus *Agrippa the Skeptic *Arcesilaus *Hecataeus of Abdera *Heraclides of Tarentum *Herodotus of Tarsus *Menodotus of Nicomedia *Nausiphanes *Pyrrho *Sextus Empiricus *Theodas of Laodicea *Timon
Pyrrhonists post-antiquity
4th-century BC establishments
History of philosophy
Ancient Greece
Epistemological theories
Indo-Greek religions and philosophy
Philosophy of life
Buddhism and other religions
Philosophical traditions
Buddhism in the ancient Mediterranean
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