Pain itself can be pleasurable accidentally in so far as it is accompanied by wonder, as in stage-plays; or in so far as it recalls a beloved object to one's memory, and makes one feel one's love for the thing, whose absence gives us pain. Consequently, since love is pleasant, both pain and whatever else results from love, in so far as they remind us of our love, are pleasant.
Thomas AquinasThe same fire" (which he decides to be material) " torments the damned in hell and the just in purgatory...The least pain in purgatory exceeds the greatest in this life.
Thomas AquinasGod should not be called an individual substance, since the principle of individuation is matter.
Thomas AquinasPeace is the work of justice indirectly, in so far as justice removes the obstacles to peace; but it is the work of charity (love) directly, since charity, according to its very notion, causes peace.
Thomas AquinasA man should remind himself that an object of faith is not scientifically demonstrable, lest presuming to demonstrate what is of faith, he should produce inconclusive reasons and offer occasion for unbelievers to scoff at a faith based on such ground.
Thomas AquinasMercy without justice is the mother of dissolution; justice without mercy is cruelty.
Thomas AquinasWhat can be accomplished by a few principles is not effected by many. But it seems that everything we see in the world can be accounted for by other principles, supposing God did not exist. For all natural things can be reduced to one principle, which is nature, and all voluntary things can be reduced to one principle, which is human reason, or will. Therefore there is no need to suppose God's existence.
Thomas Aquinas