Who said "Shifu believed in me when I didn't believe in myself."?

This quote is attributed to Po.

Shifu believed in me when I didn't believe in myself. - Po

"Shifu believed in me when I didn't believe in myself."

Po Friendship

"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!"

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."