kind resting on certain truth, the other on opinion. On which account he says some where:
III. Parmenides too philosophizes in his poems; as Hesiod and Xenophanes, and Empedocles used to. And he used to say that argument was the test of truth; and that the sensations were not trustworthy witnesses. Accordingly, he says:—
On which account Timon says of him:—
Plato inscribed one of his dialogues with his name—Parmenides, or an essay on Ideas. He flourished about the sixty-ninth Olympiad. He appears to have been the first person who discovered that Hesperus and Lucifer were the same star, as Phavorinus records, in the fifth book of his Commentaries. Some, however, attribute this discovery to Pythagoras. And Callimachus asserts that the poem in which this doctrine is promulgated is not his work.
IV. He is said also to have given laws to his fellow-citizens, as Speusippus records, in his account of the Philosophers. He was also the first employer of the question called the