Don’t talk Latin before the Franciscans.
More French Proverbs:
Don't make an oven of your cap or a garden of your belly.French
Like breeds like.
French
Don't slaughter more pigs than you can salt.
French
There is nothing so well done but may be mended.
French
He never did a good day's work who went grumblingly about it.
French
True nobility is invulnerable.
French