My brother Tom was always better with his hands than the rest of us were -- an important characteristic for a surgeon. One day, a few years into his career, I asked him, "How can you get up in the morning, go to work, wash your hands, dress up and then pick up a knife and slice someone open?" He replied that he was not "slicing someone open," but removing something that was hurting someone. His profession is science that strives to do the greatest good and the least harm. It is, in vocational terms, a continuation of the healing ministry of Jesus.