21 Lessons for the 21st Century

21 Lessons for the 21st Century is a 2018 nonfiction book by Yuval Noah Harari. It is built as a set of short, focused reflections on the present moment and the problems that shape it, rather than a story with plot or characters. The book was published in the US and the UK, and in Israel under the Hebrew title 21 מחשבות על המאה ה-21. Its genre is essay, which fits the way it moves between ideas and current questions.

This book suits readers who want a clear, contemporary essay collection that is more about thinking than narrative. It can work well for people looking for short sections they can read one by one, with attention on broad social and intellectual issues. What stands out is its direct structure and its effort to frame the 21st century through compact observations, which places it close to other idea-driven nonfiction rather than to plot-based books.