Abstract
The paper deals with the question of the development of Duns Scotus’ thought on the causes of the will: is the intellect a contributory cause of the choice (as claimed in the writings of the Oxford period), or is it only an occasion for it (as stated in the last works, written in Paris)? The collatio 6, probably discussed in 1301, immediately after the arrival of the Scottish theologian in Paris, still defends the doctrine of the intellect as a contributory cause of the will, and therefore represents the last text preceding the turn of Scotus towards the theory that assigns to the intellect the role of mere causa sine qua non. This theory was widespread in Paris and supported by the Master of Scotus, Gonsalvus of Spain, who probably heavily influenced the doctrinal change of Scotus.