We would think a man insane who, instead of covering his house with a roof and putting windows in his window frames, goes out in stormy weather, and scolds the wind, the rain, and the clouds. But we all do the same when we scold and blame the evil in other people instead of fighting the evil which exists in us. It is possible to get rid of the evil inside of us, as it is possible to make a roof and windows for our house. This is possible. But it is not possible for us to destroy evil in this world, just as we cannot order the weather to change and the clouds to disappear. If, instead of teaching others, we would educate and improve ourselves, then there would be less evil in this world, and all people would live better lives.
Leo Tolstoy, A Calendar of Wisdom, P. Sekirin, trans. (1997), January 21