“Saint Thomas Aquinas says, wisely, that the only way to drive out a bad passion is by a stronger good passion. The same is true of thoughts as of passions. When your mind wanders, like a child, your will must bring it back, like a mother. [. . .] The will-parent must discipline the mind-child, avoiding both the opposite extremes commonly made in disciplining either children or thoughts: tyranny or permissiveness.”

American philosopher and professor, Catholic convert

Peter John Kreeft is an American philosopher and professor, associated with Boston College and The King’s College. A Catholic convert, he has built a long career writing on Christian philosophy, theology, and apologetics. He has written more than eighty books in those fields, and his work often focuses on defending and explaining the Christian faith. He is also known for co-formulating Twenty Arguments for the Existence of God with Ronald K. Tacelli in their Handbook of Christian Apologetics.