Thomas Aquinas

“ For the gift of justifying grace especially ordains a man to good, which is the object of the will; and hence a man is moved to it by a movement of the will which is a movement of free-will. But wisdom perfects the intellect which precedes the will ”

“ Infants are not capable of the movement of their free-will; hence it is by the mere infusion of their souls that God moves them to justice. Now this cannot be brought about without a sacrament; because as original sin, from which they are justified, does not come to them from their own will, but by carnal generation, so also is grace given them by Christ through spiritual regeneration. And the same reason holds good with madmen and idiots that have never had the use of their free-will. ”

“ In the infusion of justifying grace there is a certain transmutation of the human soul, and hence a proper movement of the human soul is required in order that the soul may be moved in its own manner. ”

“ Certain miraculous works, although they are less than the justification of the ungodly, as regards the good caused, are beyond the wonted order of such effects, and thus have more of the nature of a miracle. ”

“ Hence sin is remitted to us, when God is at peace with us, and this peace consists in the love whereby God loves us. Now God's love, considered on the part of the Divine act, is eternal and unchangeable; whereas, as regards the effect it imprints on us, it is sometimes interrupted, inasmuch as we sometimes fall short of it and once more require it. ”

“ The succession of opposites in the same subject must be looked at differently in the things that are subject to time and in those that are above time. For in those that are in time, there is no last instant in which the previous form inheres in the subject; but there is the last time, and the first instant that the subsequent form inheres in the matter or subject; and this for the reason, that in time we are not to consider one instant, since neither do instants succeed each other immediately in time, nor points in a line, as is proved in Physic. ”

“ It belongs to the same virtue to seek one contrary and to avoid the other; and hence, as it belongs to charity to love God, so likewise, to detest sin whereby the soul is separated from God.
Reply to Objection 2: A man ought not to return to those things that are behind, by loving them ”

“ It is not a miraculous work, whenever a natural thing is moved contrary to its inclination, otherwise it would be miraculous for water to be heated, or for a stone to be thrown upwards; but only whenever this takes place beyond the order of the proper cause, which naturally does this. Now no other cause save God can justify the ungodly, even as nothing save fire can heat water. ”

“ Secondly, justice is so-called inasmuch as it implies a certain rectitude of order in the interior disposition of a man, in so far as what is highest in man is subject to God, and the inferior powers of the soul are subject to the superior, i.e. ”