*21 Lessons for the 21st Century* is a book by **Yuval Noah Harari**, published in 2018.

The book explores various challenges and questions facing modern society, covering topics such as technology, politics, and individual identity. Harari offers insights into how these issues are shaping the present and future, addressing themes like the impact of artificial intelligence, the rise of nationalism, and the future of work. *21 Lessons for the 21st Century* aims to provide readers with a deeper understanding of contemporary issues and encourages critical thinking about how to navigate and address them in the rapidly changing world.