Street preaching

“Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you.” For when you used often to come to me with the desire of contradicting rather than with the wish to learn, and preferred impudently to insist on your own views, which you shouted with noisy words, to patiently listening to mine, it seemed to me foolish to contend with you; since it would be an easier and slighter thing to restrain the angry waves of a turbulent sea with shouts, than to check your madness by arguments. Assuredly it would be both a vain and ineffectual labor to offer light to a blind man, discourse to a deaf one, or wisdom to a brute; since neither can a brute apprehend, nor can a blind man admit the light, nor can a deaf man hear. In consideration of this, I have frequently held my tongue, and overcome an impatient man with patience; since I could neither teach an unteachable man, nor check an impious one with religion, nor restrain a frantic man with gentleness. "Cyprian (A.D. 250) Ante-Nicene Fathers vol.5 pg. 458"