Thomas Aquinas - Sin Quotes

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The theologian considers sin mainly as an offence against God; the moral philosopher as contrary to reasonableness.

Thomas Aquinas
Every judgement of conscience, be it right or wrong, be it about things evil in themselves or morally indifferent, is obligatory, in such wise that he who acts against his conscience always sins.

Thomas Aquinas
Three conditions are necessary for Penance: contrition, which is sorrow for sin, together with a purpose of amendment; confession of sins without any omission; and satisfaction by means of good works.

Thomas Aquinas
The magnitude of the punishment matches the magnitude of the sin. Now a sin that is against God is infinite; the higher the person against whom it is committed, the graver the sin-it is more criminal to strike a head of state than a private citizen-and God is of infinite greatness. Therefore an infinite punishment is deserved for a sin committed against Him.

Thomas Aquinas
It must be said that charity can, in no way, exist along with mortal sin.

Thomas Aquinas
Baptism is not to be conferred on a man who is unwilling to give up his other sins, so neither should Baptism be given to one who is unwilling to renounce his unbelief. Nevertheless, each of them receives the Sacrament if it is conferred on him, although not unto salvation.

Thomas Aquinas
To restore man, who had been laid low by sin, to the heights of divine glory, the Word of the eternal Father, though containing all things within His immensity, willed to become small. This He did not by putting aside His greatness but by taking to Himself our littleness.

Thomas Aquinas
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.

Thomas Aquinas
Venial sin becomes mortal sin when one approves it as an end...

Thomas Aquinas
It is a sin directly against one's neighbour, since one man cannot over-abound in external riches, without another man lacking them.

Thomas Aquinas
In the life of the body a man is sometimes sick, and unless he takes medicine, he will die. Even so in the spiritual life a man is sick on account of sin. For that reason he needs medicine so that he may be restored to health; and this grace is bestowed in the Sacrament of Penance.

Thomas Aquinas
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.

Thomas Aquinas