Everyone thinks of changing the world, but no one thinks of changing himself.
Verified
insightthoughtchangeselfworldSource: "Three Methods of Reform", in Pamphlets: Translated from the Russian, Leo Tolstoy, trans. Aylmer Maude, 1900
Genuine Tolstoy. The standard sourced citation is the essay 'Three Methods of Reform' in Aylmer Maude's 1900 translation Pamphlets: Translated from the Russian. Attribution is consistent across reference works and I recall the specific sourced entry rather than only the floating popular version. Author field should be normalized to 'Leo Tolstoy'.