A man with a watch knows what time it is. A man with two watches is never sure.
More French Proverbs:
The fool's mother is always pregnant.French
One can't make head or tail of it.
French
Beware of a reconciled enemy.
French
Choosy pigs never get fat.
French
Believe that, and drink some water.
French
Three removals are as bad as a fire.
French