Luis de Molina (September 1535, Cuenca, Spain – 12 October 1600, Madrid, Spain) was a Spanish Jesuit priest and a staunch Scholastic defender of 'human liberty' in the Divine grace and human liberty controversy of the Renaissance (Molinism).
From 1551 to 1562, Molina studied law in Salamanca, philosophy in Alcala de Henares, and theology in Coimbra. After 1563, he became a professor at the University of Coimbra, and afterward taught at the University of Évora, Portugal. From this post he was called, at the end of twenty years, to the chair of moral theology in Madrid, where he died.
Besides other works he wrote De liberi arbitrii cum gratiae donis, divina praescientia, praedestinatione et reprobatione concordia (4 vo., Lisbon, 1588); a commentary on the first part of the Summa Theologiae of Thomas Aquinas (2 vols., fol., Cuenca, 1593); and a treatise De jure et justitia (6 vols., 1593–1609).
It is to the first of these that his fame is principally due. It was an attempt to reconcile, in words at least, the Augustinian doctrines of predestination and efficacious grace with the new ideals of the Renaissance concerning free will. Assuming that man is free to perform or not to perform any act whatever, Molina maintains that this circumstance renders the grace of God neither unnecessary nor impossible: not impossible, for God never fails to bestow grace upon those who ask it with sincerity; and not unnecessary, for grace, although not an efficient, is still a sufficient cause of salvation (gratia mere sufficiens). Nor, in Molina's view, does his doctrine of free will exclude predestination. The omniscient God, by means of His scientia media (the phrase is Molina's invention, though the idea is also to be found in his older contemporary Fonseca), or power of knowing future contingent events, foresees how we shall employ our own free-will and treat his proffered grace, and upon this foreknowledge he can found his predestinating decrees.