It’s an interesting topic and I discussed something similar https://medium.com/@Hoskinator/alex-ferguson-wasn-t-a-manager-he-was-a-leader-dc92950b1f63#.ptjqw25z6

The difference between leaders and managers is leaders look and plan for the future but managers focus on managing their resources.

Managers make sure everyone is doing the job required, leaders look to changing the way we work.

Leaders focus on the future, managers focus on the present