To have that concentration to act well is like lugging...

To have that concentration to act well is like lugging things up staircases in your brain. I think that’s a thing people don’t understand. It is that exhausting. If you’re doing it well, if you’re concentrating the way you need to, if your will and your concentration and emotional and imagination and emotional life are all in tune, concentrated and working together in that role, that is just like lugging weights upstairs with your head…And I don’t think that should get any easier.