He who fights with monsters should look to it that he does not become one

Meaning: In struggling against evil, we risk adopting the very characteristics we oppose.

Origin: Friedrich Nietzsche, Beyond Good and Evil (1886), Aphorism 146.

Translations

French: Celui qui lutte contre des monstres doit veiller à ne pas devenir l'un d'eux (literally: He who fights monsters must take care not to become one)
Spanish: Quien lucha contra monstruos debe cuidar no convertirse en uno (literally: He who fights monsters should see that he doesn't become one)
Japanese: 怪物と戦う者は自分が怪物にならないよう気をつけよ (Kaibutsu to tatakau mono wa jibun ga kaibutsu ni naranai yō ki wo tsukereyo) (literally: He who fights monsters should take care not to become one)

Wisdom begins in wonder — Curiosity and a sense of amazement at the world are the foundations of all knowledge.
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A nail is driven out by another nail — New habits, relationships, or ideas can effectively replace and eliminate old ones.
The beginning is half of every action — Starting something difficult is the hardest part; once begun, completion comes more natur…
The art of being wise is knowing what to overlook — True wisdom includes knowing which details and offenses are not worth your attention or e…

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