Who said "A warrior must be flexible like bamboo, strong like oak."?

This quote is attributed to Shifu.

A warrior must be flexible like bamboo, strong like oak. - Shifu

"A warrior must be flexible like bamboo, strong like oak."

Shifu Nature

"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."

"Nature teaches us about beauty."

"Nature teaches us patience and wisdom"

"Sometimes it snows in April."

"Every town has a soul, and Twin Peaks has a troubled one."