"The intellectual tradition is one of servility to power, and if I didn't betray it I'd be ashamed of myself." This declaration by Noam Chomsky exemplifies the uncompromising radicalism that has long defined his life and work. A linguist, philosopher, prolific author, and political activist, Chomsky is one of the most influential Western intellectuals of the last half-century. Yet it is this very capaciousness that biographers and interpreters have...