Quotes from St. Thomas Aquinas

Anything done against faith or conscience is sinful.

It would seem that zeal is not an effect of love. For zeal is a beginning of contention.

See to whom Jesus is drawing near, three kinds of people: to those who make peace with him, to those who are devoted to God, and to those who are kind to their neighbors.

Miracles are signs not to them that believe, but to them that believe not.

For just as the first general precepts of the law of nature are self-evident to one in possession of natural reason, and have no need of promulgation, so also that of believing in God is primary and self-evident to one who has faith: for he that cometh to God must believe that he is.

Now just vengeance is taken only for that which is done unjustly; hence that which provokes anger is always something considered in the light of an injustice.

We ought to cherish the body. Our body's substance is not from an evil principle, as the Manicheans imagine, but from God. And therefore, we ought to cherish the body by the friendship of love, by which we love God.

The human race was in need of salvation because of the perversity of sin. For when people who are ill are cured from their illness, they are called "saved." Therefore, the Lord says: "Your faith has saved you."

Sing, my tongue, the Saviour's glory, Of His Flesh, the mystery sing; Of the Blood, all price exceeding, Shed by our Immortal King, Destined, for the world's redemption, From a noble Womb to spring.

Baptism is the door of the spiritual life and the gateway to the sacraments.

Charity is not a potency of the soul, because if it were it would be natural. Nor is it a passion, because it is not in a sensitive potency in which are all passions. Nor is it a habit, because a habit is removed with difficulty; charity, however, is easily lost through one act of mortal sin. Therefore charity is not something created in the soul.

Moreover, virtue is not concerned with the amount of pleasure experienced by the external sense, as this depends on the disposition of the body; what matters is how much the interior appetite is affected by that pleasure.