Bérenger visited Jean in order to apologize for the previous day's argument. He finds Jean sick and in bed. They argue once more, this time about whether people can transform into rhinoceroses and then about the morality of such a change. Jean is at first against it, then more lenient. Jean begins to gradually transform himself. Finally, Jean proclaims that they have just as much of a right to life as humans, then says that "Humanism is dead, those who follow it are just old sentimentalists". After transforming fully, he chases Bérenger out of the apartment.