The purpose of this book is to provide a psychiatric portrait of the historical figure known as Jesus of Nazareth, the founder of Christianity. Such a title is indeed shocking, but after a detailed analysis of the words and actions of Jesus mentioned in the Gospels, it clearly appears that he suffered from a serious mental illness: schizophrenia. Such a book is likely to arouse protests from various churches and Christian congregations around the world. However, people who are open-minded and intelligent enough will agree that the analyses made in this book reflect reality.