This book is a practical guide to protecting children from atheism and how to treat it. The author begins by defining atheism, its origins, its most prominent causes, and its propositions. He then defines the characteristics of childhood and adolescence. He also devotes an entire chapter to discussing atheism in adolescence, attempting to understand its intellectual and emotional context among adolescents. He then concludes by discussing methods of prevention and treatment. This rare blend of intellectual and educational dimensions in confronting atheism in the age groups most vulnerable to it represents an unprecedented effort that we have been sorely lacking, and which the Arabic library is sorely lacking. Parents, guardians, teachers, and educators need it.