Servant leadership is defined as leaders who serve others first by listening, empathizing and helping people grow. The concept originated from ancient texts like the Arthashastra and teachings of Jesus Christ. In the 1970s, Robert Greenleaf further defined servant leadership as aspiring to serve others primarily. Servant leaders demonstrate characteristics like listening, empathy, awareness, conceptualization and building community. Modern examples include Herb Kelleher of Southwest Airlines and Dee Hock of Visa International, who created cultures of service and sustainability.