He would sink a ship freighted with crucifixes.
More French Proverbs:
Men's ignorance makes the pot boil for priests.French
Everything does not fall that totters.
French
He who has a stepmother has the devil at his hearth.
French
You sell more herrings on the market than sole.
French
If you want to love your household as much as your bread then you will have to knead your wife like dough.
French
It is too late to lock the stable door when the horse is stolen.
French