Panthoides (;

fl. ''Floruit'' ( ; usually abbreviated fl. or occasionally flor.; from Latin for 'flourished') denotes a date or period during which a person was known to have been alive or active. In English, the unabbreviated word may also be used as a noun indic ...

c. 275 BC) was a dialectician and

philosopher Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...

of the Megarian school. He concerned himself with "the logical part of philosophy", and at some point taught the Peripatetic philosopher Lyco of Troas. He wrote a book called ''On Ambiguities'', against which the Stoic philosopher

Chrysippus Chrysippus of Soli (; , ; ) was a Ancient Greece, Greek Stoicism, Stoic Philosophy, philosopher. He was a native of Soli, Cilicia, but moved to Athens as a young man, where he became a pupil of the Stoic philosopher Cleanthes. When Cleanthes ...

wrote a treatise. He disagreed with

Diodorus Cronus Diodorus Cronus (; died c. 284 BC) was a Greek philosopher and dialectician connected to the Megarian school. He was most notable for logic innovations, including his master argument formulated in response to Aristotle's discussion of future ...

concerning his ''Master Argument'', arguing that something is possible which can never be true, and that the impossible can never be the consequence of the possible, and that therefore not everything that has happened is necessarily true. Diodorus' view was that everything that has happened must be true, and that therefore nothing is possible which can never be true.Epictetus, ''Discourses'', ii. 19. 1

Notes

References

* {{AncientGreece-philosopher-stub 3rd-century BC philosophers Hellenistic-era philosophers Megarian philosophers