In questions of this sort there are two things to be observed. First, that the truth of the Scriptures be inviolably maintained. Secondly, since Scripture doth admit of diverse interpretations, that no one cling to any particular exposition with such pertinacity that, if what he supposed to be the teaching of Scripture should afterward turn out to be clearly false, he should nevertheless still presume to put it forward, lest thereby the sacred Scriptures should be exposed to the derision of unbelievers and the way of salvation should be closed to them.
Thomas AquinasLove must precede hatred, and nothing is hated save through being contrary to a suitable thing which is loved. And hence it is that every hatred is caused by love.
Thomas AquinasMercy without justice is the mother of dissolution; justice without mercy is cruelty.
Thomas AquinasIt would seem that the ingratitude, whereby a subsequent sin causes the return of sins previously forgiven, is a special sin. For, the giving of thanks belongs to counter passion, which is a necessary condition of justice. But justice is a special virtue. Therefore this ingratitude is a special sin. Thanksgiving is a special virtue. But ingratitude is opposed to thanksgiving. Therefore ingratitude is a special sin.
Thomas Aquinas