It goes without saying that the desire to accomplish the task with more confidence, to avoid wasting time and labour, and to spare our experimental animals as much as possible, made us strictly observe all the precautions taken by surgeons in respect to their patients.
Bio: Colin Luther Powell was an American statesman and a retired four-star general in the United States Army. He was the 65th United States Secretary of State, serving under U.S. President George W. Bush.