The general aim of the democrat is to substitute government by general assent for government by force, but this requires a population that has undergone a certain kind of training. Given a nation divided into two nearly equal portions which hate each other and long to fly at each other's throats, that portion which is just less than half will not submit tamely to the domination of the other portion, nor will the portion which is just more than half show, in the moment of victory, the kind of moderation which might heal the breach.
Source: Bertrand Russell: Ideas That Have Harmed Mankind，1946.
More info.:http://russell-j.com/beginner/0861HARM-210.HTM