Calvino's Our Ancestors trilogy is a series of literary works full of imagination and philosophical depth, each with its own unique style and theme. Therefore, it was impossible to simply answer which one was the best because it depended on the reader's personal taste and reading experience. However, I think the best of the Trilogy of Our Ancestors is the second book of the Trilogy of Italy, The Ancestors of Ancestors. This novel explored the origin and evolution of human beings through an imaginative fantasy story. The novel is full of scientific fantasy and philosophical thinking. At the same time, it also contains a profound description of Italian history and culture, allowing readers to feel the unique charm and historical and cultural heritage of Italy. The Ancestor of Ancestors is a novel with a unique storyline and language style. It also provides readers with an opportunity to think deeply about the origin and evolution of human beings. So if you're a fan of fantasy and philosophical thinking, I strongly recommend reading Ancestor's Ancestor.