Theodore Roosevelt regarded leadership as his one gift, the area in which he might be considered to possess genius. He presented his views on leadership throughout his voluminous writings. He intended for future writers to study them with an eye toward action, as he himself had done of historic figures.

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

One wonders if Lyndon Johnson and Richard Nixon's administrations may come to be viewed, in the future, as having been underestimated in some respects. To be sure, each ended in failure. Nonetheless, Johnson's accomplishments in civil rights and immigration legislation, and Nixon's in respect to relations with China, may loom larger with the passage of time.

The unprecedented transparency of our time is a making change by the day. Our era, with transparency and the spread of information, is decentralizing authority and power at a breakneck pace. Those who understand this can break away. Those who attempt to hold back may well be trampled.

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.

Arguably there's no school for any high position of leadership. That said, Theodore Roosevelt was remarkably well prepared for the presidency. He had held executive positions in the military, in local government, in the federal government.

I often encountered books by academics and others who had not actually done what they had written about. They tend to create artificial simplicity; their prose doesn't have the vigor of "lived words." On the other hand, many practitioners lack the context or introspection to make their experiences and understandings transferable - and, in our time, many don't actually write the books they "author." My ideal is to unify theory and practice.