On the Bondage of the Will

On the Bondage of the Will (Latin: De Servo Arbitrio, literally, "On Un-free Will", or "Concerning Bound Choice", or "The Enslaved Will") by Martin Luther argued that people can achieve salvation or redemption only through God, and could not choose between good and evil through their own willpower. It was published in December 1525.

Source: Wikipedia — On the Bondage of the Will (CC BY-SA 4.0)