Ecumenical theology encourages us to look beyond theological differences and recognize the common ground of all Christian faiths. It promotes unity in the Spirit and the search for a all-encompassing and inclusive church enriched by the diversity of traditions and uniting all its parts in one Christian community.

Church Fathers Portal
Facts, Sources, Short Bios - all the essentials about the Church Fathers: We are currently working on an English-language Church Fathers Portal.
Publications
The Ökumenisches Forum has been published since 1977. Since volume 36, the journal has been officially published bilingually under the new title "Ökumenisches Forum - Journal for Ecumenical and Patristic Studies" both as an eJournal and still in print format.
Currently, volume 43 is in preparation.
Prof. Argárate's list of publications can be viewed here.