He who fights with monsters might take care lest he thereby become a monster,and if you gaze for long into an abyss, The abyss gazes also into you.——Friedrich Nietzsche 与恶魔斗争的人要时刻警惕，以免自己也变成恶魔，如果你久久地注视着深渊，那深渊同时也在注视着你。