Evaluating Theoretical sample of Habermas based on the relation of Ethics and Republicanism in Political Thought of Kant

Habermas divides political thought into two eras of Classic and Modern, in general, to explain the relation of ethics and politics. In his view, ethics and politics had mutual relations in classic era; but, in the beginning of modern era and with creation of two methodological and topical evolutions, classic “political philosophy” was replaced by science or “social philosophy” and this causes the increasing separation of ethics and politics; thus, politicswhich was an institution to ensure the happiness and salvation of citizens became an institution of management and controlling technique in social relations and human instincts. Habermas extended the abovementioned evolution to Kant’s Ideas, too. The purpose of current article, based on the earmarks and features of Kant political thought, is to prove that the mentioned evolution could not be extended to Kant, since in Kant political thought like classic political thought, politic is the way of development of ethical concepts, with this difference that in Kant thought the concept of “happiness” is replaced with “solipsism” and “perfection”.