The problem of leadership and its part in organizational life is up to now of the most knotty matters. Already in early 1970s R. Stogdill wrote that there were almost as much definitions of leadership as those who tried to define this concept.[2] During more than three decades elapsed since then the number of definitions only grew while the rapport between them became progressively less. And nowadays the voices are heard that the nature of managers and leaders is quite moot idea and there are no coherent viewpoints on what they have to do and what makes them to act in such a way...