John Kenneth Galbraith, the Harvard economist who died last week in his 98th year, has been justly celebrated for his wit, fluency, public-spiritedness and public service, which extended from New Deal Washington to India, where he served as U.S. ambassador. Like two Harvard colleagues -- historian Arthur Schlesinger Jr. and Sen. Pat Moynihan, another ambassador to India -- Galbraith was among liberalism's leading public intellectuals, yet he was a friend and skiing partner of William F. Buckley. After one slalom down a Swiss mountain, inelegantly executed by the 6-foot-8-inch Galbraith, Buckley asked how long Galbraith had been skiing. Thirty years,...