When I was a young fellow I was knocked down plenty. I wanted to stay down, but I couldn't. I had to collect the two dollars for winning or go hungry. I had to get up. I was one of those hungry fighters. You could have hit me on the chin with a sledgehammer for five dollars. When you haven't eaten for two days you'll understand.

Grantland Rice quoting Dempsey, Book of Boxing, page 299.