The document discusses how great leaders are able to inspire people to act, rather than simply motivate them through incentives or threats. It provides examples of the Wright brothers, Apple, and Martin Luther King Jr, who were able to inspire large groups of people through a shared purpose or vision. These leaders created a following of supporters who acted not because they had to, but because they wanted to. The document argues that while motivation can elicit behavior, true inspiration is more powerful and sustainable over the long term. It allows leaders to have disproportionate influence and create extremely loyal customers and employees.