The books that the father read should be inspirational and educational, but also suitable for his age and cultural background. Here are some examples of books suitable for fathers: The Great Gatsby was a story about the social life and dreams of the early 20th century in America. The book depicted a way of life that pursued dreams and freedom, which might be very enlightening to an elder like his father. The Catcher in The Rye was written by D. Salinger of the United States. It told the story of the growth of a teenager, Holden Caulfield. The book's topics include self-identity, growth, responsibility, and loneliness, which might resonate with people of a father's age. Alive was a story about the life of a Chinese farmer. This book depicted many events and characters in Chinese social history that might be very enlightening to people of his father's age. "How Steel Was Tempered" was a story about the growth of a young Soviet worker. The book's main topics, such as patriotism, the spirit of labor, personal values, and collective interests, might be very enlightening to people of his father's age. These books were very enlightening and educational, and they were also suitable for people of his father's age to read. Of course, which book to choose would depend on his father's interest and reading level.