Maurice Caldwell speaking in 2012 (IMAGE) University of California - Los Angeles Caption Not long after entering the California prison system, Caldwell (pictured here speaking in 2012) was stabbed in the head, shoulder and chest by another inmate who used an improvised 6-inch-long knife made from a metal rod. Credit Courtesy of Maurice Caldwell (via Paul Abramson) Usage Restrictions Use permitted with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.