Raymond Aron is a contemporary famous philosopher and political theorist in the West.Liberty naturally becomes the basic problem that he should pay attention to.However,many scholars merely took liberty as an Abstract idea.On the contrary,in Liberty Aron thought that liberty should be operable in realistic political and social life.The research on liberty aimed at how to realize freedom in real life.Based on above these,combining with the western social and political system and social relations,taking Tocqueville and Marx's idea of liberty as ...