Who said "Shifu's rejection was his greatest mistake."?

This quote is attributed to Tai Lung.

Shifu's rejection was his greatest mistake. - Tai Lung

"Shifu's rejection was his greatest mistake."

Tai Lung Change

"I have waited long enough. Now I am the Dragon Warrior."

"You deny your own chi? Then you deny your potential."

"I am disappointed. You have the power of the Dragon Warrior, yet you hide from your destiny."

"Thirty years I have waited. Thirty years of patience."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."