St. Gregory of Nazianzus: . . . Not to every one, my friends, does it belonge to philosophize about God . . .

Icon of St. Gregory the TheologianBut since they neglect every path of righteousness, and look only to this one point, namely, which of the propositions submitted to them they shall bind or loose, (like those persons who in the theatres perform wrestling matches in public, but not that kind of wrestling in which the victory is won according to the rules of the sport, but a kind to deceive the eyes of those who are ignorant in such matters, and to catch applause), and every marketplace must buzz with their talking; and every dinner party be worried to death with silly talk and boredom; and every festival be made unfestive and full of dejection, and every occasion of mourning be consoled by a greater calamity—their questions—and all the women’s apartments accustomed to simplicity be thrown into confusion and be robbed of its flower of modesty by the torrent of their words…since, I say this is so, the evil is intolerable and not to be borne, and our Great Mystery is in danger of being made a thing of little moment. Well then, let these spies bear with us, moved as we are with fatherly compassion, and as holy Jeremiah says, torn in our hearts; let them bear with us so far as not to give a savage reception to our discourse upon this subject; and let them, if indeed they can, restrain their tongues for a short while and lend us their ears. However that may be, you shall at any rate suffer no loss. For either we shall have spoken in the ears of them that will hear, and our words will bear some fruit, namely an advantage to you (since the Sower soweth the Word upon every kind of mind; and the good and fertile bears fruit), or else you will depart despising this discourse of ours as you have despised others, and having drawn from it further material for gainsaying and railing at us, upon which to feast yourselves yet more…

Not to every one, my friends, does it belong to philosophize about God; not to every one; the Subject is not so cheap and low; and I will add, not before every audience, nor at all times, nor on all points; but on certain occasions, and before certain persons, and within certain limits.

— Gregory of Nazianzus, First Theological Oration