For Levinas dialogue occurs when one is open to and receptive of the Other. He cautions, however, that although dialogue impedes violence, it should not be pursued unilaterally or vigorously, because this can also lead to violence. The abolition of violence, which is the goal at which dialogue aims, can instead turn violent in the face of unrestrained persuasive discourse. Vigilance and caution must be maintained if dialogue is not to lapse into hostility and aggression. It is important to respect differences and acknowledge insoluble problems in order to avoid animosity. Without recognition and respect, dialogue can become adversarial and antagonistic.