His horse’s head is too big, it cannot get out of the stable.
More French Proverbs:
Big winds, small showers.French
True nobility is invulnerable.
French
Talk of the wolf and you see his tail.
French
God visits us, but most of the time we are not at home.
French
One "take this" is worth more than two "you shall have."
French
Self -- love is the worst of all flattery.
French