Robert Kiefner Greenleaf introduced the concept of servant leadership in 1970. He defined the servant leader as one who serves others first to help them develop and perform at their best. Some key attributes of servant leadership include listening, empathy, foresight, and commitment to enhancing others' personal growth. While critiqued as potentially ineffective for business goals, servant leadership focuses on ethical and sustainable leadership through service, community-building, and empowering others. Greenleaf established the Center for Applied Ethics to promote servant leadership principles.