For my part, if I am to write the truth, my inclination is to avoid all assemblies of bishops, because I have never seen any council come to a good end, nor turn out to be a solution of evils. On the contrary, it usually increases them. You always find there love of contention and love of power (I hope you will not think me a bore, for writing like this), which beggar description; and, while sitting in judgement on others, a man might well be convicted of ill-doing himself long before he should put down the ill-doings of his opponents. So I retired into myself; and came to the conclusion that the only security for one’s soul lies in keeping quiet.

Gregory of Nazianzus, Letter 130 (to  Procopius), cAD 382, in Creeds, Councils and Controversies: Documents Illustrating the History of the Church Ad 337-461, ed. James Stevenson and W. H. C. Frend, Rev. ed. (London: S. P. C. K, 1989).