Dante put Muhammad in one of the lowest circles of Hell. At the same time, the medieval Christian poet placed several Islamic philosophers much more honorably in Limbo. Furthermore, it has long been suggested that for much of the basic framework of the Divine Comedy Dante was indebted to apocryphal traditions about a “night journey” taken by Muhammad. Dante scholars have increasingly returned to the question of Islam to explore the often surprising encounters among religious traditions that the Middle Ages afforded. This collection of essays works through what was known of the Qur’an and of Islamic philosophy and science in Dante’s day and explores the bases for Dante’s images of Muhammad and Ali. It further compels us to look at key instances of engagement among Muslims, Jews, and Christians.

When first published in 1926 this book aroused much controversy. The theory expounded in the book was that Islamic sources in general, and the writings of Ibn al-`Arabi in particular, formed the basis of Dante’s poem Divine Comedy, the poem which symbolised the whole culture of medieval Christianity. The book shows how fundamental Muslim legends of the nocturnal journey and of the ascension of the Prophet Muhammed appear in Dante’s writings.

The conflict and contact between Muslims and Christians in the Middle Ages is among the most important but least appreciated developments of the period from the seventh to the fourteenth century. Michael Frassetto argues that the relationship between these two faiths during the Middle Ages was essential to the cultural and religious developments of Christianity and Islam—even as Christians and Muslims often found themselves engaged in violent conflict. Frassetto traces the history of those conflicts and argues that these holy wars helped create the identity that defined the essential characteristics of Christians and Muslims. The polemic works that often accompanied these holy wars was important, Frassetto contends, because by defining the essential evil of the enemy, Christian authors were also defining their own beliefs and practices. Holy war was not the only defining element of the relationship between Christians and Muslims during the Middle Ages, and Frassetto explains that everyday contacts between Christian and Muslim leaders and scholars generated more peaceful relations and shaped the literary, intellectual, and religious culture that defined medieval and even modern Christianity and Islam.

Describing Dante's descent into Hell midway through his life with Virgil as a guide, Inferno depicts a cruel underworld in which desperate figures are condemned to eternal damnation for committing one or more of seven deadly sins. As he descends through nine concentric circles of increasingly agonising torture, Dante encounters doomed souls including the pagan Aeneas, the liar Odysseus, the suicide Cleopatra, and his own political enemies, damned for their deceit. Led by leering demons, the poet must ultimately journey with Virgil to the deepest level of all. For it is only by encountering Satan, in the heart of Hell, that he can truly understand the tragedy of sin.

In The Venetian Qur'an, Pier Mattia Tommasino uncovers the author, origin, and lasting influence of the Alcorano di Macometto, a book that purported to be the first printed European vernacular translation of the Qur'an.

The Prophet of Islam in Old French gives the first English translation of the only medieval French narratives that present comprehensive accounts of Muhammad's prophethood: Alexandre du Pont's Romance of Muhammad from 1258 and the 1264 translation of a Muslim apocalypse, The Book of Muhammad's Ladder. The introduction addresses the problems of the romance's divergence from conventional Christian representations of Muhammad's confirmation as prophet and the absence of Christian commentary in the apocalypse. It discusses the traditions regarding Muhammad's prophethood, the conventions of the apocalyptic genre, and the propagandistic aims of both narratives in relation to the crusades and missionary activity at that time. These works are of particular interest because they are the first to present to a French lay audience the topic of Muhammad's prophethood, and scholars have long debated whether the apocalypse influenced Dante's Divine Comedy.

As the specter of religious extremism has become a fact of life today, the temptation is great to allow the evil actions and perspectives of a minority to represent an entire tradition. In the case of Islam, there has been much recent confusion in the Western world centered on distorted portrayals of its core values. Born of ignorance, such confusion feeds the very problem at hand. In The Heart of Islam one of the great intellectual figures in Islamic history offers a timely presentation of the core spiritual and social values of Islam: peace, compassion, social justice, and respect for the other. Seizing this unique moment in history to reflect on the essence of his tradition, Seyyed Hossein Nasr seeks to "open a spiritual and intellectual space for mutual understanding." Exploring Islamic values in scripture, traditional sources, and history, he also shows their clear counterparts in the Jewish and Christian traditions, revealing the common ground of the Abrahamic faiths. Nasr challenges members of the world's civilizations to stop demonizing others while identifying themselves with pure goodness and to turn instead to a deeper understanding of those shared values that can solve the acute problems facing humanity today. "Muslims must ask themselves what went wrong within their own societies," he writes, "but the West must also pose the same question about itself . . . whether we are Muslims, Jews, Christians, or even secularists, whether we live in the Islamic world or in the West, we are in need of meaning in our lives, of ethical norms to guide our actions, of a vision that would allow us to live at peace with each other and with the rest of God's creation." Such help, he believes, lies at the heart of every religion and can lead the followers of the Abrahamic religions (Judaism, Christianity, and Islam) as well as other religious and spiritual traditions to a new future of mutual respect and common global purpose. The Heart of Islam is a landmark presentation of enduring value that offers hope to humanity, and a compelling portrait of the beauty and appeal of the faith of 1.2 billion people.