Any society, whatever its political system, is perpetually in transit between a past that forms its memory and a vision of the future that inspires its evolution. Along this route, leadership is indispensable: decisions must be made, trust earned, promises kept, a way forward proposed. Within human institutions – states, religions, armies, companies, schools – leadership is needed to help people reach from where they are to where they have never been and, sometimes, can scarcely imagine going.
