Thomas Aquinas: 2 ideas worth knowing

2 ideas from Thomas Aquinas, each explained in a minute and credited to the original work. Free on Savvy.

Five roads Aquinas thought all led to God
In the Summa Theologica, Aquinas offered five arguments for God's existence drawn from observed features of the world: things in motion need a mover, effects need causes, contingen…
— Thomas Aquinas, Summa Theologica
One act, two effects: why intent changes everything
Aquinas argued a single act can have two effects: one you intend, one you merely foresee. Killing an attacker in self-defense is permissible because the death is a foreseen side ef…
— Thomas Aquinas, Summa Theologica

Five ideas worth knowing, every week