Who said "Every warrior must face their inner demons."?

This quote is attributed to Shifu.

Every warrior must face their inner demons. - Shifu

"Every warrior must face their inner demons."

Shifu Courage

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

"When will you realize? The more you take, the less you have."

"Your story may not have such a happy beginning, but that does not make you who you are."

"It is said that the Dragon Warrior will bring peace to the Valley."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."