What were Hitler's and Mussolini's guiding principles and ultimate goal?

For Hitler the ultimate goal was to control the entire
world.  I do not believe that Mussolini had any such grandiose plans.  However, he was
motivated by a desire to restore a Roman Empire of sorts (except he looked more to
Africa than to Europe for his empire).

For both men, the
guiding principle was fascism.  Fascism believes that a singler person should be the
undisputed leader of a society.  This society should be as homogeneous as possible in
terms of ethnicity and in political thought (it should be completely dedicated to the
leader).