1. Plato's "Dialogues" and "Utopia" Reason for recommendation: Emerson said that Plato is philosophy, and philosophy is Plato. Plato's philosophy is not only a representative of ancient Greek philosophy, but also beautifully written and highly readable.

2. Kant’s three major criticisms Reason for recommendation: Kant is known as the Copernicus of philosophy and set off a reverse revolution in the philosophy world. From then on, philosophy no longer only cared about the external world, but began to explore human rationality and cognitive abilities. However, Kant's works are relatively difficult to understand and cannot be understood by ordinary people.

3. Schopenhauer, "The World as Will and Representation" Reason for recommendation: The founder of voluntarism, a thorough pessimist, and an opponent of Hegel.

4. Nietzsche's "The Birth of Tragedy", "Thus Spoke Zarathustra" and "The Will to Power" Reasons for recommendation: The most controversial philosopher and poet in the history of philosophy, he occupies the mind of writers and artists Very high status. Breaking the superstition of theology, rationality, and morality, advocating individuality, and having many famous sayings.

5. Recommended reason for Heidegger's "Being and Time": the founder of existentialism. The greatest philosopher of the 20th century deeply explored the meaning of death, time, and language, put forward the philosophical proposition of "being toward death," and raised individual survival to a new level.

6. Sartre's "Being and Nothingness" Reason for recommendation: existentialist philosopher and writer. Mainly explores the meaning of freedom and existence. There are many literary works.

7. Wittgenstein's "Tractatus Logico-Philosophique" and "Philosophical Research" Recommended reasons: Philosopher of language, the greatest philosopher alongside Heidegger in the 20th century. He went through two stages in his life. In the early stage, he formed the ideal language school, and in the later stage, he formed the everyday language school. Both schools have great influence on the language field in the philosophical world. Use language to solve thousands of years of unresolved problems in the history of philosophy.

8. Foucault’s “Madness and Civilization” To be honest, I haven’t read it yet. But as a highly reputable work and an issue discussed, it should be worth reading.

I typed the above myself and recommended them based on my own reading experience. If you have any questions, you can further communicate with me.