caption death_date influenced era birth_place school_tradition influences image_size main_interests name birth_date image article_title region
euclid of megara c. 365 bce ichthyas , eubulides , clinomachus , thrasymachus , stilpo ancient philosophy megara megarian school socrates , eleatic school 200px logic , ethics euclid of megara c. 435 bce euclid of megara.jpg euclid of megara
 western philosophy
euclid of megara

euclid of megara -lrb- ; also euclides , eucleides ; ; c. 435 -- c. 365 bce -rrb- was a greek socratic philosopher who founded the megarian school of philosophy .
he was a pupil of socrates in the late 5th century bce , and was present at his death .
he held the supreme good to be one , eternal and unchangeable , and denied the existence of anything contrary to the good .
editors and translators in the middle ages often confused him with euclid of alexandria when discussing the latter 's `` elements '' .
