Date: 1273

"Therefore the consent to a sinful act always proceeds from the higher reason: because, as Augustine says (De Trin. xii, 12), 'the mind cannot effectively decide on the commission of a sin, unless by its consent, whereby it wields its sovereign power of moving the members to action, or of restrai...

— St. Thomas Aquinas (1225-1274)

Date: 1273

"On the contrary, Augustine proves (De Lib. Arb. i, 11) that 'nothing else than his own will makes man's mind the slave of his desire.'"

— St. Thomas Aquinas (1225-1274)

Date: 1273

"Further, whoever sins mortally, becomes the slave of the devil, according to Jn. 8:34: 'Whosoever committeth sin is the slave of sin.'"

— St. Thomas Aquinas (1225-1274)