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Pseudo-Platonica

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Through Dialogue and Laws (dialogue)

The first is those Greek works which were attributed to Plato in antiquity and circulated alongside his authentic writings. These can be subdivided into two groups: the spuria, which were considered spurious already in antiquity, and the dubia, the authenticity of which has been doubted only since the rise of modern scholarship. While there is broad agreement regarding some dubia, others are more disputed.

The second major group is the Arabic Pseudo-Platonica of the Middle Ages. These range from false quotations of Plato in the wisdom literature and works of theology based on Plotinus and Proclus to whole works attributed to Plato on morality, economics and occult science. The last category—works on the occult, magic, alchemy, etc.—is the most remote from the historical Plato.

Ancient pseudepigrapha

The Platonic corpus, the ancient canon of Plato's works compiled by Thrasyllus of Mendes, contains 36 writings grouped into nine tetralogies: 35 dialogues and one set of 13 letters. Thrasyllus also included in his collection six works he regarded as spurious, not being by Plato, plus a seventh, the Definitions, which, while not by Plato personally, was a product of his Academy. To this corpus may be added 18 epigrams attributed to Plato from antiquity. Their authenticity is uncertain.

The six dialogues designated spurious in the corpus are all accepted as such by modern scholars. Usually called the Appendix Platonica, they are Eryxias, Axiochus, On Justice, On Virtue, Sisyphus and Demodocus. The Appendix was added to the tetralogies by the middle of the 1st century BC. The dialogue Halcyon, sometimes attributed to Plato in antiquity and since medieval times also to Lucian, has generally been excluded from the Platonic corpus in modern printed editions.

Questions were raised in antiquity over the authenticity of four of the dialogues accepted as authentic by Thrasyllus: Epinomis, Second Alcibiades, Hipparchus and Amatores. Modern scholars are generally agreed that these works are not by Plato. Since the early 19th century, doubts have been expressed about several other works in the corpus, which are now often labeled dubia. All of the letters are now generally regarded as spurious, although the Seventh Letter has defenders. The dialogues Theages and Minos are generally regarded spurious and serious doubts have been expressed about First Alcibiades, Greater Hippias and Clitophon. Less serious doubt has also been expressed about Lesser Hippias and Menexenus. All of the dubia have defenders, but almost no scholars defend the spuria.

For all of the ancient pseudo-Platonic dialogues, it is impossible to say if they were originally published under Plato's name or if they were only attributed to him later. The concept of pseudepigrapha does not entail that they were forgeries. Some works may have circulated anonymously or under other names before being attributed to Plato to enhance their authority or commercial value or else to resolve uncertainty.

In addition to the surviving works of the Appendix Platonica, Diogenes Laertius in his Lives of the Eminent Philosophers cites five other works attributed to Plato as spurious: Midon (or Horsebreeder), Phaeacians, Chelidon, Seventh Day and Epimenides. These works have not survived.

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