It might seem that whether happiness is possible after the deaths of our bodies is a matter of concern only to Christians. In St. Thomas’s view, not so. For reasons explained in the Discussion, he believes that the immortality of the soul is not only a teaching of the Christian faith, but a bona fide conclusion of reason, so even non-Christians should believe it. If this truth was not entirely clear to pre-Christian philosophers (and it wasn’t), the reason is not that they could not have discovered it, but that even though they could have, they simply didn’t. What does come uniquely from faith is the doctrine of the general resurrection: That after a period of time, the separated souls of the dead will be reunited with their bodies.