Corey Robin discusses fear in political philosophy, over at his blog:
It was on April 5, 1588, the eve of the Spanish Armada’s invasion of Britain, that Thomas Hobbes was born. Rumors of war had been circulating throughout the English countryside for months. Learned theologians pored over the book of Revelation, convinced that Spain was the Antichrist and the end of days near. So widespread was the fear of the coming onslaught it may well have sent Hobbes’s mother into premature labor. “My mother was filled with such fear,” Hobbes would write, “that she bore twins, me and together with me fear.” It was a joke Hobbes and his admirers were fond of repeating: Fear and the author ofLeviathan and Behemoth—Job-like titles meant to invoke, if not arouse, the terrors of political life—were born twins together.
It wasn’t exactly true. Though fear may have precipitated Hobbes’s birth, the emotion had long been a subject of enquiry. Everyone from Thucydides to Machiavelli had written about it, and Hobbes’s analysis was not quite as original as he claimed. But neither did he wholly exaggerate. Despite his debts to classical thinkers and to contemporaries like the Dutch philosopher Hugo Grotius, Hobbes did give fear special pride of place. While Thucydides and Machiavelli had identified fear as a political motivation, only Hobbes was willing to claim that “the original of great and lasting societies consisted not in mutual good will men had toward each other, but in the mutual fear they had of each other.”
But more than Hobbes’s insistence on fear’s centrality makes his account so pertinent for us, for Hobbes was attuned to a problem we associate with our postmodern age, but which is as old as modernity itself: How can a polity or society survive when its members disagree, often quite radically, about basic moral principles? When they disagree not only about the meaning of good and evil, but also about the ground upon which to make such distinctions?
More here and the second part here.