"It's what you learn after you know it all that counts."

This quote is a gentle smack to the ego. It’s that reminder that the moment you think, “I’ve got this completely figured out,” you actually stop growing. Wooden is saying the really important growth happens after that point, when life proves you wrong, or shows you there’s more to the story.
Think about starting a new job and, a few months in, feeling like you already know everything and then a tough project hits and you realize how much you still have to learn. Or in relationships, when you’re sure you’re right, and then a vulnerable conversation shows you a whole different perspective. The “after you know it all” part is where humility kicks in, curiosity returns, and real wisdom starts to form.