Curiously, for all the outpourings of scholarship on Theodore Roosevelt, no one had written a book focused directly on his leadership approach, working in large part from his own letters and other writings. That opportunity was open, and I was privileged to step in.

Ronald Reagan was unusual in being an authentic personality. Unlike many professional actors - and politicians - he was much the same behind the curtain as in front.

There are people all around us whose lives are masterpieces of service. One thinks of parents working two or three jobs to serve their families and community. So, too, many in the military or in nursing or teaching. As the needs are endless, so are the possibilities of service. Now, more than ever, empowered by the Internet, more of us can serve in more ways than ever before in history.

Many people become self-conscious when they communicate. Whether it's writing or speaking, they are consumed by anxiety. Self-consciousness is an impediment to what is required to serve an audience effectively. One's goal must be to achieve audience consciousness. To put oneself in their place, to recognize that the value of any communication arises from how it is received by them, not by what it means to the author. Rather than learning a multiplicity of rules for speaking, for example, I would suggest that a focus on serving one's audience will simplify and clarify everything.

I would suggest two approaches to begin the leadership journey in earnest. First would be to ask oneself, in every interaction with others over the course of a single day: How can you best serve this person? Another approach would be to attempt, over the course of a single day, to reframe your declarative statements into questions. The thoughtful use of questions can be transformational. In my experience, most people find these exercises more challenging - and more rewarding - than they would have imagined.

William McKinley has surely been underrated - in no small part because he was succeeded by a memorable leader, Theodore Roosevelt.

Any gathering of people requires leadership to cohere, to achieve its potential contribution. What is not needed is a "boss" of yore, directing everyone else's efforts toward "the one best way."