 Our many doctrine says that humility in its simplest form is the absence of arrogance. Why does humility matter? One answer is that humility can be important to learning for leaders at all levels. Intellectual arrogance, on the other hand, can be a barrier to learning. Leaders at the operational level often operate outside their experience set while leading others who are operating beyond theirs. Leaders can be more successful by valuing the knowledge and expertise of others. Humility is a desired characteristic of operational and strategic leaders who should recognize that others have specialized expertise indispensable to success. A humble view of one's own importance helps underscore an essential ingredient to fostering cooperation across organizations. Read well this week.