Although there are some generic leadership qualities that all leaders need to develop, the leadership qualities that are required to make a good leader can vary in different companies, teams and situations.
This can be illustrated in both art and modern leadership models. For example, the fact that leadership qualities are dependent on the context is demonstrated in the play The Admirable Crichton and the film Twelve O'Clock High.
In "The Admirable Crichton", written in 1902, the Lord and butler swap their roles as leader and servant as the situation changes. On a desert island, the butler's practical skills are essential for survival, whereas the Lord's knowledge of English politics is of no value.
In the film "Twelve O'Clock High", produced in 1949, as a squadron starts to suffer increasing losses during the war, the leader's people-oriented approach starts to fail. He is replaced by a dictatorial bully who turns the squadron round and restores their pride (in a modern setting, such leadership behaviour would often be regarded as unacceptable).