EN
The subject or the present essay is a critical rationalism of Leszek Kołakowski, a philosopher who is a scholar and a jester, and who tracks down cognitive and speculative limitations of reason. While questioning the belief in reason, Kołakowski exposed illusions, proved that the reason quite often behaves unreasonably (when it serves ideologies). The author analyses the development of the philosopher’s thinking which led him to the conclusion that the scientific rationalism, which has deceived Christianity proved to be helpless in the face of the world without God