The article reprinted here stands on its own, of course, but it can also be seen as a crucial contribution to a debate that began in 1977, when Harvard Business School professor Abraham Zaleznik published an HBR article with the deceptively mild title “Managers and Leaders: Are They Different?” The piece caused an uproar in business schools. It argued that the theoreticians of scientific management, with their organizational diagrams and time-and-motion studies, were missing half the picture—the half filled with inspiration, vision, and the full spectrum of human drives and desires. The study of leadership hasn’t been the same since.
“What Leaders Really Do,” first published in 1990, deepens and extends the insights of the 1977 article. Introducing one of those brand-new ideas that seems obvious once it’s expressed, retired Harvard Business School professor John Kotter proposes that management and leadership are different but complementary, and that in a changing world, one cannot function without the other. He then enumerates and contrasts the primary tasks of the manager and the leader. His key point bears repeating: Managers promote stability while leaders press for change, and only organizations that embrace both sides of that contradiction can thrive in turbulent times.
Source: Havard Business Review