 Bolzano did not shy away from taking up also practical problems in publications and writing about them, for instance, about the improvement of poorhouses and about the elimination of misery and poverty in the population of Prague. Bolzano treated these and many other questions of practical relevance also in his “edifying addresses” (Erbauungsreden), of which the first collection was published already in 1813 (in a second edition 1839), and five volumes were published posthumously. The first volume of the complete critical edition of all of Bolzano’s Erbauungsreden appeared in 2007 (Bolzano 2007a).