Machiavelli (1469-1527) is the seminal figure in early modern intellectual history for those living, or wishing to live, in a functional democracy. What Machiavelli is primarily about, and what makes him indispensable to those of us living in and struggling to preserve democracy in America, is the sum of individual and collective qualities required of a citizen, or what he termed virtu: a host of traits ranging from manliness to boldness, ingenuity,...