The purpose of a leader is to realize a dream. Leaders are more than visionaries; they are doers as well. They possess the will and courage to pursue the dream, to act. They make dreams a reality. To have followers, they must communicate well and be willing to share the fruits.
In sum, a leader is a dreamer, a doer and a great storyteller. The leader serves and shares with those that follow. The Leader envisions the desired state, forms it into a clear vision and finds a way to achieve it.