There was a lot of sorrow in [Johnny] Cash's life. Even while he's trying to make music to inspire people he's fighting day after day with his own demons and sorrows.

I thought I pretty much knew Johnny Cash's life. But one of my personal discoveries was how little we know about any of these people.

He [Johnny Cash] always wanted to use his music to lift other people up, to say no matter how much trouble, there's hope. That was always his message in his songs. That's why he and [Bob] Dylan bonded so much, because they were both trying to do something meaningful.

At times, Singer Johnny Cash rubbed dirt from the earth under his fingernails in order to avoid any arrogance which might stem from his fame, by reminding himself of his roots and origins.