A cliché Nietzsche quote but this one seemed apt today.
"Whoever fights monsters should see to it that in the process he does not become a monster. And when you look long into an abyss, the abyss also looks into you."
BGE #146 Kaufmann
"Now I see the secret of the making of the best persons, It is to grow in the open air and to eat and sleep with the earth." -Whitman