Hieromonk Hilarion is secretary for inter-Christian relations in the Moscow Patriarchate's Department for External Church Relations. This paper was presented at the seventh international conference on Russian spirituality, held at the Monastery of the Annunciation, Bose, Italy, 15–18 September 1999. It has been translated from the Russian by Peter Bouteneff. An abridged version was published in the newspaper NG-religii, no. 17, 40. 1999 (in Russian).