Editing Parmenides (section)

=== Ontology ===
Parmenides rejected the existence of Nonbeing, as something cannot be nothing. He defined all things that can be thought or spoken of as Being.{{Sfn|Vamvacas|2009|p=141}} Only the path of Being can be followed, because Nonbeing can not be thought or spoken about. To believe in the existence of both Being and Nonbeing is self-contradictory and makes knowledge impossible.{{Sfn|Vamvacas|2009|pp=139–140}} His concept of eternal Being was of one that ''is'' without regard to time. As change cannot occur within Being, there are no intervals by which time can be measured.{{Sfn|Vamvacas|2009|p=141}} Being is consistent in its form throughout its existence, as the only alternative to its state of ''being'' is ''not being''. It is bound by its own form.{{Sfn|Vamvacas|2009|p=141}} If Being had come from Nonbeing, then it would have no reason or cause to come into existence as Being. Being must be eternal, as its origin would either be from Nonbeing, which cannot exist, or it would be from Being, which means it would have always existed.{{Sfn|Vamvacas|2009|p=141}}  Being exists infinitely and is indivisible, as any space not occupied by being would be occupied by Nonbeing, which cannot exist. Being cannot move, as this would require there to be space that it does not already occupy.{{Sfn|Vamvacas|2009|p=141}} Parmenides rejected the existence of [[The Void (philosophy)|the Void]], as it would necessarily be made of Nonbeing, which cannot exist.{{Sfn|Vamvacas|2009|p=141}}