Vitae philosophorum

Hence Timon[*](Fr. 44 D.) says of him[*](Cf.Od. xi. 601.):

And the strength of high-souled Parmenides, of no diverse opinions, who introduced thought instead of imagination’s deceit.

It was about him that Plato wrote a dialogue with the title Parmenides or Concerning Ideas.

He flourished in the 69th Olympiad.[*](504-500 b.c.) He is believed to have been the first to detect the identity of Hesperus, the evening-star, and Phosphorus, the morning-star; so Favorinus in the fifth book of his Memorabilia; but others attribute this to Pythagoras, whereas Callimachus holds that the poem in question was not the work of Pythagoras. Parmenides is said to have served his native city as a legislator: so we learn from Speusippus in his book On Philosophers. Also to have been the first to use the argument known as Achilles [and the tortoise]: so Favorinus tells us in his Miscellaneous History.

There was also another Parmenides, a rhetorician who wrote a treatise on his art.