In the following video, Fr. Barron looks at the question of whether universal salvation (or at least near-universal salvation) is possible -- in other words, is it possible that no one or almost no one goes to Hell. He mentions the views of some prominent theologians and church fathers, such as Augustine, Origen, and Thomas Aquinas. Fr. Barron's own opinion on the subject surprised me, though ultimately I don't think we can be sure of the answer to this question in this life.