“I got a burlap sack, put a brick in the middle, and filled it with rags, corncobs, some Spanish moss, and sand. I hung that sack off the branch of an oak tree. I'd wrap my hands with a necktie of my daddy's and punch at it. My mom gave me an hour a day. My brothers and sisters said, "Nah." I said, "You'll see."”
Source : "Joe Frazier: What I've Learned" by Cal Fussman, www.esquire.com. November 7, 2011. 
