Chapter 13 — Part I: The Creed — Article XI: The Resurrection of the Body
Section 14. Again, while the soul is separated from the body, man cannot enjoy that full happiness which is replete with every good. For as a part separated from the whole is imperfect, the soul separated from the body must be imperfect. Therefore, that nothing may be wanting to fill up the measure of its happiness, the resurrection of the body is necessary.