The first sentence of this quote is the basis to my personal leadership philosophy. To be a successful leader your subordinates need to understand the goal and to believe in the vision that their leader has. A leader that can identify and understand what each of their employees motivating factors are they will know that buttons to push to get the most out of their employees. If employees clearly understand their team's vision, even if they may not agree with that vision, it will provide them with the framework to make decisions that help their leader reach the team's goal.
I believe that employees want to help their leader reach their goals and that most people truly do want to help. The reason that some leaders fail is that they do not clearly articulate their vision and make sure that all of their employees understand the team's goal. Often there are moments when employees have to make their own decisions in the course of a normal work day. It's at these times that employees make the decisions that can cause a team to succeed or only operate at average performance levels.