By Nathan Busenitz
see all the quotes at the link.
This one is really good:
What then is our reply? We do not think that it is right to make their prevailing custom the law and rule of sound doctrine. For if custom is to avail for proof of soundness, we too, surely, may advance our prevailing custom; and if they reject this, we are surely not bound to follow theirs. Let the inspired Scripture, then, be our umpire, and the vote of truth will surely be given to those whose dogmas are found to agree with the Divine words. ( Gregory of Nyssa, Dogmatic Treatises, Book 12. On the Trinity, To Eustathius.)
Gregory of Nyssa, 335-395 AD, one of the Cappadocian fathers who helped hammer out the doctrine of the Trinity, and along with Gregory of Nazianzus and Basil of Caesarea, their contributions to the doctrine of the Trinity and the Council of Constantinople in 381 AD were key.