This satirical work is a critique of the practices of the Church and the wider social behavior of the time. Narrated by Folly, the female personification of foolishness, the book humorously criticizes various aspects of society such as superstitious religious practices, scholarly pedantry, and the excesses of the upper classes. The book is a bold critique of its time, using humor and irony to expose the follies of its society.

"The Waning of the Middle Ages" is a historical analysis of the cultural life of the late Middle Ages, particularly in France and the Low Countries, during the 14th and 15th centuries. It delves into the period's modes of thought, forms of expression, religious beliefs, and social norms. The book argues that the era was characterized by a highly stylized and overwrought civilization, marked by an excessive emphasis on chivalry and courtly love, a religious mindset dominated by the fear of death and the afterlife, and a cultural milieu that was both highly imaginative and deeply pessimistic.

The book is a comprehensive travelogue written by a 14th-century Moroccan scholar and explorer who traveled extensively across the known world, from Africa to the Middle East, India, China, and Europe. The author shares his observations and experiences in vivid detail, offering unique insights into the diverse cultures, religions, and societies he encountered during his journeys. His accounts serve as a significant historical record of the world during the Middle Ages, providing a firsthand perspective of life during that period.