Near the end of a long and fabled career, marked by a great deal of courage and no little success in the public sphere, Margaret Thatcher, who had been both the longest-serving British Prime Minister of the 20th century—from 1979 to 1990—and the very first woman to be Prime Minister, announced her retirement plans. “When I get out of politics,” she said, “I’m going to open a business and call it…
