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But I also understand the appeal of the other. The Catholic attitude is essentially “if we can construe that the Apostles, those gathered at Nicaea, etc, would have believed this, then we should too.” Given how little of early Christian writing actually survives, this is itself sometimes basically an intellectual exercise to glean fragments from Catholic writing through the ages. The Catholic approach is fine, and I trust to Matt. 16:18 on the matter, but I don’t think there is less reason in sorting out what belongs to the Magesterium, or more genuine and fervent prayer, than what happens in the Anglican Communion on knotty doctrinal issues of the day.
The Anglican attitude is characterised in the intellectual enquiry in the spirit of the Renaissance, which, after all, shouldn’t be surprising given the Renaissance intellectually fed into the Reformation. … Anglican writing has always been characterised by a fairly rigourous intellectual approach. All Anglicans were essentially trained by the same institutions in a very similar ‘establishment’ way (even if they disagreed, the reasoning often impeccable). Reason, therefore, is from that historical perspective a perfectly, well, reasonable, 3rd leg to the stool. From the internal reference it probably makes a lot more sense than the Magisterium (“we can work out our problems for ourselves” is the most laudable, if sometimes ultimately rather arrogant, feature of humanity)