As a fan of online literature, I won't recommend specific books, but I can give you some advice on depth of thought and literary reading. 1 A Short History of Humanity-Yuval Harari This is a best-selling global history, showing the many events and people in human history on the axis of time, from the agricultural revolution to the information revolution, from human evolution to global integration, from religion to politics. The book not only covers a wide range of topics but also delves into important intellectual questions such as the origin of mankind, social structure, cultural conflicts, and technological progress. 100 Years of Solitude by Garcia Márquez It was a classic of Latino literature, telling the story of the seven generations of the Buenda family, covering many historical stages from the civil war to the revolution. This book was known as the ceiling of Latin-American literature with its unique narrative, profound philosophical thoughts, and insight into human nature. 3. Think Fast and Slow by Daniel Kauneman This was a classic book on psychology that explored the two modes of human thought: fast thinking and slow thinking. Through in-depth research, Kauneman revealed the difference between fast thinking and slow thinking, as well as the limitations of fast thinking. This book will not only help you better understand the nature of thinking, but also help you improve the speed and depth of your thinking. 4. Don Quijote-Miguel de Cervantes It was a classic Spanish novel about the absurd adventures of a noble knight. This book reflected the common troubles and difficulties of human beings with its unique narrative method, profound philosophical thoughts, and insight into human nature. By reading this book, you can understand the limitations and absurdity of human thought and think about how to transcend these limitations. These books are just some of the many books that increase the depth of thought and literary reading, but they all provide deep thoughts and insights that can help you better understand human nature and the world.