In reply to Neil:
Inverted commas put to better use, and in an apposite manner, here: ". . . . . . . nor cast your pearls before swine, lest they trample them under their feet, and turn and tear you in pieces." (Matthew 7.6)
Thanks for the reminder to look up the whole of that quote - been meaning to ever since Pete Long put up his route on Deer Bield Crag. About 40 years ago!