Every leader should be required to read this book I read on a recent trip to Greece. Spiritual and political power are not mutually exclusive. Imagine if business schools taught that the more compassionate you are the more effective leader you are.
Or the power of The Five Spiritual Powers: 1) FAITH (better translated as confidence and trust); 2) DILIGENCE to practice not watering the seeds of anger, fear, hate, despair but to replace and water seeds of joy, peace and happiness; 3) MINDFULNESS to recognize things as they are without projecting bias so emotion can pass; 4) CONCENTRATION on the reality that nothing is permanent so value this moment, unhappiness is born from discrimination between self and others, and that everyone is interconnected; 5) INSIGHT where we realize that all of our suffering can be avoided by living the previous four powers.
As you cultivate these FIVE POWERS you naturally acquire the power of leadership because people flock to you for advice...