John P. Kotter.Leading Change, 1996
Leadership means (page 26):
- establishing direction -- developing a vision of the future, and the strategies to create it;
- aligning people -- communicating direction in words and deeds to everyone whose cooperation is needed to create the vision;
- motivating and inspiring -- energizing people to overcome major political, bureaucratic, and resource barriers to change by satisfying basic, but often unfulfilled, human needs.