He who fights with monsters should be careful lest he thereby become a monster. And if thou gaze long into an abyss, the abyss will also gaze into th… - Friedrich Nietzsche

Battle not with monsters, lest ye become a monster, and if you gaze into the abyss, the abyss gazes also into you.

When you look into an abyss, the abyss also looks into you.

And if you gaze long enough into an abyss, the abyss will gaze back into you.

And if you gaze for long into an abyss, the abyss gazes also into you.

Es gibt in der Welt einen einzigen Weg, auf welchem niemand gehen kann, außer dir: wohin er führt? Frage nicht, gehe ihn.

And to me also, who appreciate life, the butterflies, and soap-bubbles, and whatever is like them amongst us, seem most to enjoy happiness.

Are you a slave? Then you cannot be a friend. Are you a tyrant? Then you cannot have friends.