Over the centuries, evil has consistently managed to catch humanity off guard. Despite our historical encounters with atrocities like the Auschwitz concentration camps and the tragic events of September 11, we remain woefully unprepared to confront the malevolent forces that lurk within human nature. The attacks on 9/11 also exposed a deeper institutional failure – a lack of moral and intellectual fortitude to respond effectively to such brutal acts. Our vocabulary for describing evil has become uncertain and ambiguous, leaving us struggling to articulate the profound pain and suffering it inflicts upon humanity. Against this backdrop, author Os Guinness presents a timely and thought-provoking exploration of modern evil, delving into its causes and proffering a path forward. He disputes the common notion that extremist religion is the primary driver of evil, instead offering a more nuanced understanding of this complex phenomenon. Through Unspeakable, Guinness extends an invitation to contemplate the nature of evil, urging individuals and society as a whole to reassess their beliefs and join the quest to vanquish this destructive force. By facing our collective past and present with unflinching honesty, we can rediscover our moral voice and develop the courage to confront the evil that has for too long left us speechless.