He is past preaching to who does not care to do well.
More French Proverbs:
He who is waiting for someone else's bowl often dines late.French
Self -- love is the worst of all flattery.
French
A silent woman is a gift from God.
French
Make yourself a sheep and the wolf will eat you.
French
The benefice must be taken with its liabilities.
French
He who takes a wife takes a master.
French