Once is no custom.
More French Proverbs:
Whoso hath land hath war.French
God and man think him a fool who brags of his of his own great wisdom.
French
He is the devil's valet, he does more that he is ordered.
French
In hawks, hounds, arms, and love, for one pleasure a thousand pains.
French
There's nothing like having the key of the fields.
French
Misfortunes come on horseback and depart on foot.
French