Jean-Luc Solere

The problem of the intensification and remission of qualities was a crux for philosophical, theological, and scientific thought in the Middle Ages. It was raised in Antiquity with this remark of Aristotle: some qualities, as accidental beings, admit the more and the less. Admitting more and less is not a trivial property, since it belongs neither to every category of being, nor to every quality. Rather it applies only to states and dispositions such as virtue, to affections of bodies such as heat and sweetness, and to affections of soul such as anger. However, the property of admitting more and less was a matter of importance for the qualitative physics that had reigned up to about the time of Descartes, a physics which was concerned with concepts such as heat, coldness, lightness, heaviness, and so on.

The problem of the limitations of or conditions for God's power was one of the most fruitful topics in medieval discussions. While debating it, medieval thinkers came to redefine the concept of the "possible." William of Auxerre's disputed questions offer an example of critical reexamination of Aristotle's conception of possibility. Parallel to the account of William's views on the topic, the article provides (from a formal point of view, so to speak) an analysis of the sequence and formulation of the questions he raises, in an attempt to propose a method for reading these frequently disconcerting texts.