Editorial / Christian Duquoc and Casiano Florestan--Special column : Asking and thanking / Hans Schaller.--Petitionary prayer and thanksgiving in the world religions / Juan Marti?n Velasco.--Rabbinic Berakhah and Jewish spirituality / Lawrence A. Hoffmann.--Speaking to Abba / George M. Soares-Prabhu.--Contemporary challenges to prayer / Enzo Bianchi.--Prayer and conceptions of God / Ulrich Eibach.--Is there prayer in the eucharist? / Joan Llopis.--The prayer of the roads / Marcelo de Barros Souza.--From slave to friend / Isabelle Chareire.