The manager accepts the status quo; the leader challenges it. - Warren Bennis

We have more information now than we can use, and less knowledge and understanding than we need. Indeed, we seem to collect information because we have the ability to do so, but we are so busy collecting it that we haven’t devised a means of using it. The true measure of any society is not what it knows but what it does with what it knows.

Management is doing things right; leadership is doing the right things.

Good leaders make people feel that they're at the very heart of things, not at the periphery. Everyone feels that he or she makes a difference to the success of the organization. When that happens, people feel centered and that gives their work meaning.