Mary's Immaculate Conception: A Memorable Anniversary
Ineffabilis Deus: 8 December 1854 (Dogma of the Immaculate Conception)
Why do we believe in the Immaculate Conception?
John Paul II goes to Lourdes; reflections on the Immaculate Conception
Your Praises We Sing--on the Dogma of the Proclamation of the Immaculate Conception, Dec. 8th
Eastern Christianity and the Immaculate Conception (Q&A From EWTN)
The thread you linked to expresses a very Orthodox view and theology. In the past, a number of us, RCs and Orthodox while discussing theological matters on these threads have noted that much of what we may think, or have thought, divided us dogmatically in fact are simply a matter of words and translations. The author of the linked thread, though apparently an Eastern Rite Catholic, does all of us a service by pointing out that in the East we tend to be very patristic in speaking about theology which is not true in the West. This isn't to say that Eastern patristic talk and thought are ipso facto better because they are patristic, but rather merely to say that later scholastic expressions of patristic thought have confused things and created division where none in fact exists. In another arena, it now appears that the Monophysite controversy of the early Church which resulted in the non-Chalcedonian Churches such as the Coptic and Armenian Churches, may in fact have been another example of theologians talking at cross purposes because they weren't using the same language.
Thanks for the link!