The hardest thing for me in Vietnam wasn't seeing the wounded and dead. It was watching the big transport jets come in, bringing loads of fresh new boys for the war.

Rick Rubin said, well, I don't know that we will sell records. He said, I would like you to go with me and sit in my living room with a guitar and two microphones and just sing to your heart's content everything you ever wanted to record. I said, that sounds good to me. So I did that. And day after day, three weeks, I sang for him.

I love songs about horses, railroads, land, Judgment Day, family, hard times, whiskey, courtship, marriage, adultery, separation, murder, war, prison, rambling, damnation, home, salvation, death, pride, humor, piety, rebellion, patriotism, larceny, determination, tragedy, rowdiness, heartbreak and love. And Mother. And God.

I kept talking to my producers at Columbia about recording one of those [prison] shows. So we went into Folsom on February 11, 1968, and recorded a show live.

It's good to believe in yourself, but there are people out there who can make or break you.

I knew I wanted to sing when I was a very small boy. When I was probably 4 years old. My mother played a guitar and I would sit with her and she would sing and I learned to sing along with her.

It just took the right time. I was fully confident that I was going to see Sam Phillips and to record for him that when I called him, I thought, I'm going to get on Sun Records. So I called him and he turned me down flat. Then two weeks later, I got turned down again. He told me over the phone that he couldn't sell gospel music so - as it was independent, not a lot of money.