Comedy：

One of the typical literary structures originates as a form of drama and later extends into prose fiction and other genres as well. Comedy, as Susanne Langer says, is the image of Fortune; tragedy, the image of Fate. Each sorts out for attention the different facts of life. Comedy sorts its pleasures. It pleases our egos and endows our dreams, stirring at once two opposing impulses, our vindictive lust for superiority and our wishful drive for success and happiness ever after. The dark impulse stirs the pleasure of laughter; the light, the pleasure of wish fulfillment.