What would happen if we all stopped believing in free will? This book explains how, from a scientific standpoint, free will is an illusion. We cannot decide what we think, the same way we cannot decide what we see. Yet the belief in free will is one of the supporting elements common to all cultures; it works well at the community level, but is harmful when it comes to living in a global world today. It is time we got rid of that illusion to see the bigger picture of who we are, allow ourselves to refrain from judging or feeling guilty, and help us live together in peace.