In the past, unbelief was the result of ignorance. Then, when people learned about the truth, they were enlightened and found peace of mind. But recently unbelief, rejection, and denial have been attitudes of those who consider themselves knowledgeable in all fields, who claim to accept and believe only on rational or scientific grounds. Cloaked in science and rational philosophy, the activity of unbelief continues in many forms. The quality of believers submission is impaired, under constant threat and attack. In this book Fethullah Gulen, sensitive to the real questions people have -- the questions given rise to by the modern age -- has tried, through patient argument, to answer peoples doubts and questions about faith.