Study on Wittgenstein's thought of language-games Study on moral education thought of Marx and Engels Study of poetics thought of “Shiren Yuxie” Study on Amartya Sen's thought of justice Study on the historical thought of Macaulay Study on the political thought of Thomas Hobbes Study on the management, thoughts of family enterprises Study of Hobsbawm's thought of national state Study on Foster's thought of ecological Marxism Study on Zhang Bin's thoughts on Chinese grammar