Locke’s concept of liberty has been widely discussed since its first publication. The debates focused mainly on the issues such as the free will, the compatibility/incompatibility problem, the motivation and liberty, the theory of suspension or the rela-tionship between liberty and morality. The paper tries to explain Locke’s concept of liberty in its unity, showing its basic structure. It is argued that despite numerous ambiguities and obscurities its basic constituents can be identified proceeding from the abstract to the concrete and the most advanced. Thus we get the hierarchy of Locke’s concepts of liberty ranging from its abstract concept through its empirical and rational concepts up to its Christian-moral concept.