sentences:  He also has superhuman strength, having tricked and placed Sam once in a painful arm-hold to interrogate him.However, the Devil can be affected by angelic relics, as he can be killed by the Sword of the Archangel Michael (which he has in safekeeping), and could be "destroyed" if the whole world were to turn to pacifism (as Sam deduced after the Devil's near-annihilation of a demon rebellion, as if the Devil couldn't tempt others with sin, he would cease to exist - although the Devil notes that all humanity adopting complete pacifism would be nearly impossible).In addition, the Devil cannot see, hear, or appear within curves or circles, although he can be summoned within a circle.