Abstract
Rawls acknowledges the analogy between his conception of the moral personality and the thought of Kant. However, many philosophers have discussed that similarity. This article aims to evaluate the Kantian foundation of Rawlsian liberty. Specifically, it assesses the idea of personal autonomy. The conclusion is that certain interpretation of Kant, which incorporates both his thinkings on the moral law and on happiness as an intrinsic purpose of the human being, allows the acknowledgement of the aforementioned analogy, and thus enables a better understanding of the Rawlsian idea of freedom.