A Question of the Water and of the Land

The Quaestio de aqua et terra is a short Latin treatise in which Dante Alighieri records a scholastic disputation he delivered in Verona on 20 January 1320, in the church of Sant'Elena. The question under debate was whether water, in its natural sphere, stands higher than the dry land. It was a live puzzle in medieval natural philosophy, since the Aristotelian scheme of concentric elemental spheres seemed to place water above earth, yet the land plainly rises above the sea. Dante, living in exile and in the last year of his life, wrote the text up afterward, and it survives with his own account of the occasion at its opening. It is the only work of his that treats cosmology as a formal academic problem, and it sits close in time to the completion of the Paradiso.

Dante sets out five arguments in favor of the view that water is higher than earth, then answers them in turn. He first states his own position: the sea is not higher than the land, and the sphere of water is not eccentric to the sphere of earth. The deeper argument is about how the world is ordered. The elements keep their places by their natures, and the heavens act upon them. Dante holds that the stars, and chiefly the eighth sphere, draw the dry land up out of the waters, so that an inhabitable portion of earth is exposed. He then explains why this rise is not a mere accident of matter. The uncovered land exists so that the mixed bodies of the world, plants and animals and human beings, may live and the species be completed. The treatise thus applies the method of the schools to a question of geography and cosmology, with logical distinctions, appeals to Aristotle and to observation, and a closing note that it was composed under the reign of Cangrande della Scala.

The work has held a modest but real place in Dante studies. Its authorship was once disputed and is now generally accepted. It shows the poet of the Commedia as a trained reasoner who took the physical cosmos seriously, and it helps readers see why the geography of the Inferno and the mountain of Purgatorio are built as they are. It also shows how medieval thinkers read the created order as purposeful and ordered toward life.

Who should read this: Readers of Dante who want to see the scholastic mind behind the poem, and students of medieval cosmology or the history of science, will find it rewarding. It is a technical disputation, not a work of devotion or spiritual formation, and anyone looking for meditative or pastoral writing should turn instead to the Commedia itself.