AQUINAS ON HELL
1. The sufferings of the damned will be perfectly known to the saints or blessed in heaven, and will only make them the more thankful to God for his great mercy towards themselves.
2. There can, however, be no pity in the saints with reference to the damned. For, on the other hand, they know that the damned are suffering what they chose and still perversely choose. On the other hand, pity is painful in the one who experiences it, and there can be nothing painful in heaven.
3. The blessed are in full conformity with the will of God who wills justice. The saints rejoice in the accomplishment of God's justice. To this extent it can be said that they joy in the pains of the damned.