When the dog is drowning every one brings him water.
More French Proverbs:
Whoso hath land hath war.French
Paris was not built in a day.
French
The kettle smuts the frying-pan.
French
Don't run too far, you will have to return the same distance.
French
Give him a foot and he'll take four.
French
Speak little and well if you wish to be esteemed a person of merit.
French