Who said "Don't quit, it's not impossible."?

This quote is attributed to Arnold Schwarzenegger.

Don't quit, it's not impossible. - Arnold Schwarzenegger

"Don't quit, it's not impossible."

Arnold Schwarzenegger Perseverance

Actor Austrian-American Born 1947 (age 79)

"I'll be back"

"If it bleeds, we can kill it"

"Come with me if you want to live"

"You have been terminated"

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."