, 2005, How should genocide affect philosophy?, in J. K. Roth (ed.), Genocide and human rights, Basingstoke, Palgrave Macmillan, pp. 29-34.
, 1998, Nothing in or out of the world is all good or all bad, all gods included, in A. Tymieniecka (ed.), Creative virtualities in human self-interpretation-in-culture, Dordrecht, Kluwer, pp. 369-375.
, 1994, 'Strange interlude', Man and World 27 (1), 15-21.
, 1988, 'Strange interlude', Man and World 21 (2), 213-221.
, 1975, 'The faces of God', Man and World 8 (1), 70-81.
, 1968a, Freedom: atheism and god, in , Plenarsitzungen, Freiburg-Basel-Wien, Herder, pp. 262-269.