In the present article, the author attempts to solve the paradox hidden in the declaration pronounced by Bogusław Wolniewicz who referred to himself as a ‘Non-Confessional Roman Catholic.’ First, the author analyses (1) the way Wolniewicz understood the sources of religion, and then, (2) how he defined the minimum of Christianity. (3) The author investigates whether it is possible to reconcile his acceptance of euthanasia with the teaching of the Church, and finally, (4) the author focuses on his evangelical aesthetics. By way of conclusion the study traces on similarities between the tychistic rationalism and Christianity.