(CNN)Success in business is important, honorable and deeply admirable. But it requires a particular set of skills that are often very different from those that produce success in government. As Walter Lippmann wrote in 1930 about Herbert Hoover, possibly the most admired business leader of his age, "It is true, of course, that a politician who is ignorant of business, law, and engineering will move in a closed circle of jobs and unrealities. . . . [But the] popular notion that administering a government is like administering a private corporation, that it is just business, or housekeeping, or engineering, is a misunderstanding. The political art deals with matters peculiar to politics, with a complex of material circumstances, of historic deposit, of human passion, for which the problems of business or engineering as such do not provide an analogy."