• No boxer in the history of boxing has had Parkinson's. There's no injury in my brain that suggests that the illness came from boxing.

    Muhammad Ali: No boxer in the history of boxing has had Parkinson's. There's no injury in my brain that suggests that the illness came from boxing.
    "Oprah Talks to Muhammad Ali". Interview with Oprah Winfrey, www.oprah.com. June 2001.