There is an African proverb that says: "If you want to go fast go alone. If you want to go far get together".
A good leader is always going to build a team of strong and big thinking people. This team will know where it is going because a leader will be a "destination leader"--telling the team where we are headed and how together we will get there. They will have shared common vision of the destination.
The difference between a good leader and a great leaders is that a great leader will attract "big" people who are smarter than him/her and will be allowed to innovate and to make mistakes--but always staying on the course to the destination.