Bees do not become hornets.
More French Proverbs:
Long on hair, short on brains.French
Men will only throw stones at trees that are laden with fruit.
French
It is only the bashful that lose.
French
When all you have is a hammer, everything looks like a nail.
French
God save you from a man who has but one business.
French
The saint's-day over, farewell the saint.
French