It was a minor landmark in church history. Last week the Roman Catholic Church issued a new and explicit clarification of the conditions under which Catholics may be permitted to discuss religion and even pray with their Protestant brethren.
The new document, issued by the Vatican's Congregation of the Holy Office, was titled Instructions to the Episcopate on the Ecumenical Movement. Its four important points:
1) Bishops may decide on their own whether clergy and laymen may attend local meetings with Protestants at which matters of faith are discussed.
2) Special corps of...