How did St. Thomas Aquinas explain human free will and divine Providence?

St. Thomas Aquinas addressed the tension between human free will and divine Providence by arguing that they are fundamentally compatible rather than contradictory. In his Summa theologiae, he maintained that human free will is essential, as the absence of it would render moral concepts like rewards, punishments, and commands meaningless.1

Aquinas explained that God, as the prime mover and creator, does not override human agency. Instead, he posited that God moves human beings in accordance with their voluntary natures. Just as God moves natural causes without preventing them from acting according to their nature, He moves voluntary causes without depriving their actions of their voluntary character.1

Furthermore, Aquinas taught that human freedom is actually rooted in the relationship between the creature and the Creator. He argued that because God wills each being to act according to its proper nature, human autonomy is a reflection of divine wisdom. By creating humans with the capacity for self-movement in their intellectual and volitional existence, God ensures that human freedom is not destroyed by His sovereignty, but rather sustained by it.2