First, I will demonstrate that Machiavelli's conception of political phenomena is richer and more varied and conforms to an adequate understanding of political reality more closely than later, more “systematic,” or “regular,” conceptions often associated with the Enlightenment. Second, I find in Machiavelli strong grounds for resisting authoritarian claims that the variegated and unpredictable nature of political phenomena must be managed with unipartite and, especially, centralized practical political alternatives. I focus upon Machiavelli's frequent use of a particular word by which he refers to politically significant occurrences, accidente. I argue that his employment of this word, especially in the Discourses, serves to accentuate his sensitivity to the irregular, nonsystematic nature of political reality—to the possibility of “exceptions.” But I demonstrate that his practical response to this reality, is not a perpetually vigilant, all-powerful sovereign but is, rather, a far more moderate answer, the mixed regime.