The story humorously tells about the life and struggles of Leviathan. The giant speaks of his extraordinary perfections: enormous size, unprecedented beauty, and keen intelligence. Leviathan initiates the reader into his anxieties and into the complex problems of other large animals and birds. Jewish folklore is used. Now let us give the floor to the main character. I, Leviathan, presented to the reading public my life story from the fifth day of Creation to the present moment. My literary opus expanded the horizon of human knowledge about fauna in all its diversity. I have uncompromisingly confronted the facts of my own perfection with the fiction of hapless interpreters of Scripture. The clear mind and high spirit of grateful readers, who appreciate my advantages, have received an instructive example of separating truth from lie, impartiality from injustice, benevolence from envy.