Louis XIV, known as the Sun King, was the King of France from 1643 to 1715, recognized for his absolute monarchy and the centralization of power in France. His reign is marked by the famous quote, 'L'état, c'est moi' (I am the state), which reflects his belief in the divine right of kings. Louis XIV's rule exemplifies the age of absolutism, where monarchs held complete control over their governments, contrasting with emerging constitutionalism in Europe.