Who said "You can't change what you are."?

This quote is attributed to Shrek.

You can't change what you are. - Shrek

"You can't change what you are."

Shrek

"Ogres are like onions. We have layers."

"I'm a believer. I believe in you."

"Just because I can't see something doesn't mean I can't fight it."

"The world judges you on who you are inside."