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This book originates from "Philosophy: Death", one of the popular open courses at internationally renowned universities. In this easy-to-understand philosophical work, Professor Shelly Kagan challenges many views that we are accustomed to or have not thought about, inviting readers to systematically reflect on the philosophical mystery of death, explore the meaning of death with a clearer concept, from metaphysics to values, think seriously and rationally about the truth of life and death, and then lead us to explore the value of life and what attitude we should face the journey of life. Professor Shelly Kagan says Humans only have bodies and no souls. Eternal life is a bad thing, not a blessing. Suicide may be both rational and ethical under certain circumstances. Fear is an inappropriate response to death. Our common view of death is quite wrong. The point is not that you ultimately agree with me; But you think for yourselves. The most important thing I have to do is, You are invited to think rationally and seriously about life and death.