In "What We Owe the Future," philosopher William MacAskill embarks on a profound exploration of longtermism, a guiding principle that places the well-being of future generations at the forefront of our ethical considerations. MacAskill compellingly argues that our current moral duties extend far beyond addressing the immediate crises of our age, such as climate change and pandemics. Instead, we are tasked with the monumental responsibility of ensuring the survival and flourishing of human civilization for millions of years to come. Through a blend of rigorous philosophical inquiry and accessible examples, MacAskill invites readers to contemplate the vast potential of humanity's future—and the critical choices we face today that could shape the fates of countless generations. Drawing from a rich tapestry of history, ethics, and speculative futures, MacAskill challenges us to consider scenarios where our descendants inherit a world that has either overcome today's existential threats or succumbed to them. "What We Owe the Future" is not just a call to action; it is a visionary blueprint for a world where moral progress continues to advance, where civilization rebounds from potential collapse, and where humanity learns to coexist with advanced digital intelligences. This book is an urgent reminder that the decisions we make now have the power to echo through millennia, offering a beacon of hope and a call to stewardship for a future filled with justice, hope, and beauty.