21 Lessons for the 21st Century is one of Yuval Noah Harari's best selling books. It is a visionary investigation that probes into the most urgent issues of today. We are moving into the uncharted territory of the future that has technological advances. These changes take place at a rate that is faster than our ability to understand and adapt. In this era, hacking becomes the latest tactic of war, and the world feels more pressured than ever. As Harari addresses the challenge of navigating life in the face of constant and disorienting change, we get an insight and understanding of some of the most pressing matters of today.