Whores and thieves are always very pious.
More French Proverbs:
The bleating of the lamb merely arouses the tiger.French
The devil was sick, the Devil a saint would be; the Devil was well, the devil a saint was he.
French
Money is lost only for want of money.
French
You pays your money and you takes your choice.
French
A wise man may learn of a fool.
French
No wind can do him good who steers for no port.
French