I'm not referring narrowly to the federal civil service but to the idea of serving the society, often through working for the government as a teacher or bureaucrat.
From a Jay Mathews column on education this morning--discussing a book on how to get into the top colleges, describing the audience for the book: "college applicants who yearn for admission to undergraduate institutions that will make them attractive, when they graduate, to recruiters from private equity, artificial intelligence, management consulting, investment banking and other top-paying professions"