Il ne faut pas vendre la peau de l'ours avant de l'avoir tué.
“One must not sell the bear's skin before killing it.”
Do not count on something before you actually have it.
— Traditional France Wisdom, France
Source: Traditional French proverb, popularized by Jean de La Fontaine's fable 'L'Ours et les Deux Compagnons' (1678)
More Proverbs from France
Little by little, the bird builds its nest.
Great results are achieved gradually through patient, consistent effort.
The habit does not make the monk.
Outward appearances do not reveal a person's true character.
He who lives shall see.
The future is uncertain and only time will reveal what happens.
After the rain, fine weather.
Hardship is followed by better times, so keep hope.
Better late than never.
Doing something after a delay is preferable to never doing it at all.
The walls have ears.
Be careful what you say, as you may be overheard.