“When you look into an abyss, the abyss also looks into you.”
“He who fights with monsters should look to it that he himself does not become a monster . . . when you gaze long into the abyss the abyss also gazes into you”
“When you look into the abyss, it’s not supposed to wave back.”
“And if you gaze for long into an abyss, the abyss gazes also into you.”
“Beware that, when fighting monsters, you yourself do not become a monster... for when you gaze long into the abyss. The abyss gazes also into you.”
“When you stare into the abyss the abyss stares back at you.”