Parmenides

Parmenides was born Elea, a small town on the west coast of Italy, in 515 BCE. He was a student of Xenophanes but did not except his ideas, though Xenophanes' influence can be seen in his work.  He believed that the only truth is through senses.  He believed that the "beliefs of mortals" was not to be trusted and only what is will forever be.  And was is-not is unthinkable.  Therefore genuine thought can only be about what it.
Using the Homeric Hexameter and writing in prose brings the reader into the story, more intriguing to read on for the average man versus normal philosophical writings in my own opinion which if a person wanted to change a society, shouldn't you start at the average man?
So the goddess Night tells him "all things" but stresses that he must test everything that is said. And that is the basis of the story minus a chariot ride and meeting some other divine beings.
One thing that really got me thinking was how true he was when he says that what is will always be.  Justice will always be doing what is right.  And what is right will never change.  One person cannot change justice to meet his needs: though some mere mortals have tried eventually time and the hatred of injustice of others catches up to them and Justice prevails.  So why fight for what is unjust when you can not change what is.