In this seminal work, Abbas Mahmud al-Aqqad directly confronts the famous Marxist phrase that religion is the 'opium of the people.' He methodically deconstructs this claim, arguing that faith is not a tool of oppression but a fundamental human instinct and a cornerstone of civilization. Al-Aqqad explores the psychological necessity of belief, its role in providing moral guidance, and its power to inspire progress and social cohesion. The book serves as a robust intellectual defense of religion's place in modern society, challenging purely materialistic worldviews.