Here's a Gregory of Nyssa quote I came across on the CARM boards:
"Let [Eunomias] first show, then, that the Church has believed in vain that the Only-begotten Son truly exists, not made such through adoption by a Father falsely so-called, but existing as such according to nature, by generation from Him Who Is, not estranged from the nature of Him who begot Him...And let no one interrupt me and say that what we confess should be confirmed by constructive reasoning. It suffices for the proof of our statement that we have a tradition coming down to us from the Fathers, an inheritance as it were, by succession from the Apostles through the saints who came after them." - St. Gregory of Nyssa (c. 335-95) Against Eunomius (Jaeger Wilamowitz-Moellendorf, Vol. 2, pp. 84-85).
The thread in which it appears is entitled, Who invented Sola Scriptura? Since it wasn't that long ago that I posted a bit on Gregory of Nyssa, I was curious about this quote. I'm very tempted to say the quote come from Jurgens, although one finds the exact bibliographic information (from of all places) a quote from Robert Sungenis on the aomin website. In other words, I'm a bit suspicious if the person using it actually read the context.
This is a popular quote. The actual context can be found in the The Post-Nicene Fathers:
Let our author, then, show this to begin with, that it is in vain that the Church has believed that the Only-begotten Son truly exists, not adopted by a Father falsely so called, but existing according to nature, by generation from Him Who is, not alienated from the essence of Him that begat Him. But so long as his primary proposition remains unproved, it is idle to dwell on those which are secondary. And let no one interrupt me, by saying that what we confess should also be confirmed by constructive reasoning: for it is enough for proof of our statement, that the tradition has come down to us from our fathers, handled on, like some inheritance, by succession from the apostles and the saints who came after them.
In the CARM thread, I briefly responded that what wasn't done by the use of this quote is define what is meant by "tradition." In the quote cited, Gregory is comparing an established position with "undemonstrated nonsense." He's saying if someone puts forth a new position without establishing it, there is no good reason to accept it. When it came to defeating Euonomius, Gregory does not appear to rely on some other infallible authoritative content as a means of argumentation. "Tradition," in the quote cited, does not contradict sola scriptura. To prove Gregory's statement is against sola scriptura, you've got to prove Gregory believed in another source of infallible truth by this statement. "Tradition" for the early Christian writers is usually referring to a basic, foundational outline of belief about God and Christ, or refers to practices and rites not doctrinal or dogmatic.
One of my favorite recent blog posts is Turretinfan's What Gregory of Nyssa Considered Inspired. (By the way, Turretinfan appears to have considerably more time available on the Internet than I do!).