"Heart of an Old Man" is a famous novel by the Ukrainian writer Ivan Nechuy-Levytskyi, which was first published in 1863. In this tragic story, the author shows the psychology of the main character - old man Grigory, who lives alone and communicates only with his faithful dog. Because of the loss of his son, he began to leave the usual path and bury himself in mysticism and religious fulfillment, which leads him to a desperate act. "The Heart of an Old Man" is not only a story about loss and loneliness, but also a tragic reflection on the nature of human life and the power of faith.