Satan: All right, all right. Show me one substantial example of love then. Go on.
Professor: The Taj Mahal.
Professor: The most exquisite building in the world. Shah Jehan's memorial to his beloved wife. It was built as a lasting monument to their love.
Satan: It was built as a tax dodge! Wat's the matter with you? It was either that or get clobbered for death duties. I tell you, all acts of love are just selfishness in disguise.