Who said "Working hard and never giving up is the real secret."?

This quote is attributed to Po.

Working hard and never giving up is the real secret. - Po

"Working hard and never giving up is the real secret."

Po Work

"I'm not a big fan of jokes"

"There is no secret ingredient. It's just you."

"You just have to believe"

"I'm the Dragon Warrior!"

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."