"Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will

Gaze back into you

Explanation:

The quote was by a German philosopher known as Friedrich Nietzsche.

He said ‘Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you’ .

The quote however means that we should be careful when dealing with something bad so we don’t become a part of it later on.

answer; conditional stimulus will trigger a conditioned response;