What does toussaint l'ouverture letter to the directory mean?

Haitian Revolutionary leader, Toussaint L'Ouverture wrote a letter to the French Directory advising them against any efforts to re-institute slavery in Haiti. Three years later, Napoleon sought to reestablish slavery, and L'Ouverture headed the resistance. He was captured, taken to France and died in custody three years later. Napoleon was unable to subjugate Haiti.