Full Idea
The will is the rational appetite.
Gist of Idea
The will is the rational appetite
Source
Thomas Aquinas (Summa Theologicae [1265], II-II Q58 4)
Book Reference
Aquinas,Thomas: 'On Law, Morality and Politics', ed/tr. Baumgarth,W. /Regan R. [Hackett 1988], p.150
A Reaction
Defining the will in terms of reason sounds more like an Enlightenment optimist than a medieval theologian. I suspect that for him it is tautological the reason is involved, if only the reason can make decisions. Hobbes prefers to ruling appetite.