"Oath; Night and Day" is a novel by the Finnish writer Alexis Kivi, which tells the story of love, loyalty and devotion in the difficult conditions of XIX century society. The main characters, Jussi and Hanna, are looking for happiness and mutual understanding, but their love is complicated by social status, superstitions and internal contradictions. The book will touch on the topic of moral principles, the ideal of life and the importance of self-realization in an era when external conventions were of great importance. Alexis Kiwi skillfully reveals the inner conflicts and contradictions of his characters, creating an exciting and impressive world of the novel "Oath; Night and Day".