- The Early G.E. Moore's Argument Against Abstractionism2016 | Faculty of Arts
- Concerning the spiritual in art2009 | Faculty of Social Sciences
- Keynote address at the 85th birthday of prof. PhDr. Zdenek Kucera, Dr.h.c., 31. 3. 20152015 | Hussite Theological Faculty
- From Russell's Realism of Propositions to the Theory of Incomplete Symbols2013 | Faculty of Arts
