Is Leadership Art ?

We can consider that Leadership is more an art than a science, but,
Within any profession or sector, one of the primary characteristics of the art of leadership is the willingness to work on an edge—the edge between the familiar and the emergent. Harvard University professor Ronald A. Heifetz refers to this edge when he speaks of :”the capacity to lead with only good questions in hand—and that acts of leadership require the ability to walk the razor's edge without getting your feet too cut up—working that edge place between known problems and unknown solutions, between popularity and anxious hostility “.