One of the aims of this paper was to characterize liberal theories of rational choice which emerged in XX century, especially theory of public choice. It ought to be noticed that such a task was realized many times by many authors. Due to this fact the text is devoted mostly to review the positions presented by the leading representatives of the intellectual circle mentioned above. Especially the shortages of their philosophical anthropology were pointed out. Moreover, the critique of the linguistic dimension of the rational choice theory was proposed. It was also shown that their endeavours of grounding their works in a long lasting tradition is profoundly disputable.