"Tumor" is a philosophical novel written by the Austrian writer Thomas Bernhard. In this book, the author examines the theme of eternal questions of life and death through the prism of the story of a hero who faces the irreversibility of time and the inexorability of fate. The main character is in a situation where he is diagnosed with an incurable tumor. Throughout the book, he spends time feeling the pressure of time and thinking about the meaning of his existence, human destiny and its inevitable end. "Tumor" is a work that makes the reader think about the fragility of life, the importance of the moment and the nature of human existence. This book not only causes fear of an unknown future, but also encourages us to think about the value of every moment that can change our attitude to life and death.