The objective of this book is to develop leadership principles from two directions - the scientific and the practical perspective - that are both application-oriented and universally applicable as well as effective and flow into a holistic leadership framework. Both the hermeneutic and the empirical analysis show that the basic principles of holistic, application-oriented, universally applicable and effective leadership can be described with the duality of transactional management and transformational leadership principles, taking into account core traits and alignment with follower needs....