Mark Twain, The Mysterious Stranger, chapter 10 (1916)

[Humanity] has unquestionably one really effective weapon?laughter. Power, money, persuasion, supplication, persecution?these can lift at a colossal humbug?push it a little?weaken it a little, century by century; but only laughter can blow it to rags and atoms at a blast. Against the assault of laughter nothing can stand.