From the book "21 Lessons for the 21st Century" by Yuval Noah Harari, presenting a table of contents, introduction, and various passages from the book's sections. The book explores major contemporary global challenges, organized into themes such as The Technological Challenge(e.g., AI, automation, Big Data, and resulting inequality) and The Political Challenge (e.g., disillusionment, nationalism, and global problems). Harari questions the viability of traditional narratives like nationalism and religion in addressing modern issues and discusses the importance of secular values, moral clarity, and self-awareness. A significant theme is the rise of artificial intelligence and biotechnology, which threatens both human employment and the concept of free will, urging readers to prepare for a world of constant change.