…… name that people use to make sense out of complex events and the outcomes of events they otherwise would not be able to explain. In other words, people attribute leadership to certain individuals who are called leaders because people want to believe that leaders cause things to happen rather than have to explain causality by understanding complex social forces or analyzing the dynamic interaction among people, events, and environment.
– Joseph C Rost
Leadership Licks 
LEADERSHIP IS THE……..
“Leadership is the ART of getting people to want to do the things that you believe need doing.”
This gives value and commitment to the work being undertaken. Achieve this and work will continue willingly even if you or your managers are not here to supervise it.
“Leadership is the behaviour that gets more from your team than text books say is possible”
A true Leadership style works for most people. There will always be the exception and these people need Managing. You need both skill sets in your toolbox to be effective.