Who said "Every master was once a student who refused to give up."?

This quote is attributed to Shifu.

Every master was once a student who refused to give up. - Shifu

"Every master was once a student who refused to give up."

Shifu Perseverance

"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."

"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."