"Dissertation on the Books of Origen Against Celsus" is a publication that offers an in-depth analysis and critical review of the work of Origen, a famous early Christian writer who actively entered into a dispute with the Roman philosopher Celsus. The author of this book, Francis Cunningham, carefully researches and analyzes the arguments contained in Origen's dialogues, which magisterially defended Christianity against paganism. This book is an important resource for those interested in early Christian apologetics and who want to better understand the debate that took place between Christianity and classical pagan philosophy in the first centuries AD.