Where on Earth is the Church?

And now a word from our good friend Dr N.P. 'Nippy' Williams (1883-1943), Anglo-Catholic humourist and theologian extraordinaire and Oxford scholar:

'All bodies which can shew historical continuity with the undivided Church, and possess the essentials of its doctrinal and institutional structure, are still parts of the Catholic Church, and collectively constitute it. These essentials are: (1) orthodoxy, as defined by the Seven Ecumenical Councils; (2) the threefold Ministry; (3) the Seven Sacraments. Applying these criteria to bodies actually existing at the present day, we find that the true Church of Christ consists of the Roman, Eastern Orthodox, Anglican, and Old Catholic Churches. . . . Whatever these bodies teach and practise in common is either a part of the primitive Depositum, or a legitimate development of or inference from it.'