I think making mistakes and discovering them for yourself is of great value, but to have someone else to point out your mistakes is a shortcut of the process.
“Your work isn't just to learn and say the lines. Your work is to figure out what the chatter in your brain is, that's going on under the lines. It doesn't matter whether you're speaking or not speaking because your mind is working the way your character's mind would work.”
“I was hitting .360 when I was diagnosed. I didn't forget how to play while I was recovering. I don't know if the cancer is gone for good. I don't think anyone ever knows, but no one is going to steal my joy for as along as I'm able to play baseball.”