Who said "What is necessary cannot be otherwise."?

This quote is attributed to Parmenides.

What is necessary cannot be otherwise. - Parmenides

"What is necessary cannot be otherwise."

Parmenides Philosophy

Philosopher Ancient Greece 515–445

"What is, is. What is not, is not."

"Being is; not-being is not."

"One should both say and think that Being is."

"How could what is perish? How could it come to be?"

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."