"The Books of the Small Souls 3, Twilight of the Souls" is a novel by the Dutch writer Louis Couperus. It consists of four parts and tells the story of the lives of members of a Dutch family who suffer from jealousy, ambition, and family intrigues. In the third part, "Twilight of the Souls", the main characters confront the weariness of life and the inevitable end amid family hostilities and legal battles.