The article discusses a concrete case of historiosophic theodicy, viz. the conception of August Cieszkowski, in order to present the structure of such conceptions and discuss theoretic and practical problems involved in them. The starting point of Cieszkowski’s deliberations on evil is a historical fact. To substantiate for his historiosophic optimism Cleszkowski must find not only the sense of the times in which he was living but must also explain the past, with all its moral evil: social catastrophes, misery, suffering, and toil of the millions of people. Concentration on historical facts does not eliminate from the scope of his deliberations the problem of God’s acceptance of evil. This problem is simply shifted to another plane of reflections.