"Little Demon" is a work of the famous Russian writer Fyodor Sologub, which was published in 1907. In this book, the author explores the themes of good and evil, spirituality and the mystery of human nature. The main character, who is known as the Little Demon, embodies a dark force that manipulates the lives of the heroes and leads them deeper and deeper into a world of internal battles. Sologub uses a complex psychological approach in his prose, revealing the inner world of his characters and expressing complex philosophical thoughts through their actions and thoughts. "Little Demon" leaves a deep impression on the readers and prompts them to discuss moral issues and the mystery of the human soul.