
“Nothing is as dangerous as an ignorant friend; a wise enemy is to be preferred.”
Rien n'est si dangereux qu'un ignorant ami;
Mieux vaudrait un sage ennemi.
Book VIII (1678-1679), fable 10.
Fables (1668–1679)
Variant: Nothing is more dangerous than a friend without discretion; even a prudent enemy is preferable.