Leaders take people from today into tomorrow. As obvious as that is, it is a function that is frequently overlooked. Anyone who promises to keep things exactly as they are is not a leader. It is not possible to keep the world the way it is. In that same way, anyone who insists she can take us back to where we used to be is not a leader.
Leaders understand that time moves on and that times change.
As the ancient philosopher Heraclitus reminded us. It is not possible to step a second time in the same river. For the river keeps moving and the second step will be into different water. Moses was a great leader because he brought the people out of slavery in Egypt and across the Red Sea. He held them together in the wilderness and after a generation deposited them at the edge of the Promised Land.