The connection between culture and leadership is clearest in organizational cultures and microcultures. What we end up calling a culture in such systems is usually the result of the embedding of what a founder or leader has imposed on a group that has worked out. In this sense, culture is ultimately created, embedded, evolved, and ultimately manipulated by leaders. At the same time, with group maturity, culture comes to constrain, stabilize, and provide structure and meaning to the group members even to the point of ultimately specifying what kind of leadership will be acceptable in the future. If elements of a given culture become dysfunctional leaders have to surmount their own culture and speed up the normal evolution processes with forced managed culture change programs. These dynamic processes of culture creation and management are the essence of leadership and make you realize that leadership and culture are two sides of the same coin.

–  Organizational Culture and Leadership by Edgar H. Schein