Most students of history have likely pondered the question: Is it the times that make the man, or is it the man that makes the times? The question, though superficially intriguing, seems to have an easy enough answer: Sometimes it is the times that makes the man, and sometimes it is the man that makes the times. Rarest of all is the man who is both summoned and elevated by the times, on the one hand, and who has the courage and conviction to shape the times in return, on the other hand. It is this lattermost group of men...