Who said "Being is perfect, and perfection admits no alteration."?

This quote is attributed to Parmenides.

Being is perfect, and perfection admits no alteration. - Parmenides

"Being is perfect, and perfection admits no alteration."

Parmenides Truth

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?"

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."