Quotes from book
Summa Theologica

Thomas AquinasOriginal title Summa Theologiae (Latin)

The Summa Theologiae is the best-known work of Thomas Aquinas . Although unfinished, the Summa is "one of the classics of the history of philosophy and one of the most influential works of Western literature." It is intended as an instructional guide for theology students, including seminarians and the literate laity. It is a compendium of all of the main theological teachings of the Catholic Church. It presents the reasoning for almost all points of Christian theology in the West. The Summa's topics follow a cycle: God; Creation, Man; Man's purpose; Christ; the Sacraments; and back to God.

“To love is to will the good of the other.”

Thomas Aquinas book Summa Theologica

II-II, q. 26, art. 6
Summa Theologica (1265–1274)

“On the contrary, The demons are ever assailing us, according to 1 Peter 5:8: "Your adversary the devil, as a roaring lion, goeth about, seeking whom he may devour." Much more therefore do the good angels ever guard us”

Thomas Aquinas book Summa Theologica

Summa Theologica (1265–1274)
Context: Whether the angel guardian ever forsakes a man?... It would seem that the angel guardian sometimes forsakes the man whom he is appointed to guard... On the contrary, The demons are ever assailing us, according to 1 Peter 5:8: "Your adversary the devil, as a roaring lion, goeth about, seeking whom he may devour." Much more therefore do the good angels ever guard us... the guardianship of the angels is an effect of Divine providence in regard to man. Now it is evident that neither man, nor anything at all, is entirely withdrawn from the providence of God: for in as far as a thing participates being, so far is it subject to the providence that extends over all being.

I, q. 113, art. 6

“Of these the first is "melting," which is opposed to freezing. For things that are frozen, are closely bound together, so as to be hard to pierce. But it belongs to love that the appetite is fitted to receive the good which is loved, inasmuch as the object loved is in the lover…Consequently the freezing or hardening of the heart is a disposition incompatible with love: while melting denotes a softening of the heart, whereby the heart shows itself to be ready for the entrance of the beloved.”

Thomas Aquinas book Summa Theologica

I-II, q. 28, art. 5
Summa Theologica (1265–1274)
Context: it is to be observed that four proximate effects may be ascribed to love: viz. melting, enjoyment, languor, and fervor. Of these the first is "melting," which is opposed to freezing. For things that are frozen, are closely bound together, so as to be hard to pierce. But it belongs to love that the appetite is fitted to receive the good which is loved, inasmuch as the object loved is in the lover... Consequently the freezing or hardening of the heart is a disposition incompatible with love: while melting denotes a softening of the heart, whereby the heart shows itself to be ready for the entrance of the beloved.

“Just as it is better to illuminate than merely to shine, so to pass on what one has contemplated is better than merely to contemplate.”

Thomas Aquinas book Summa Theologica

II–II, 188 <br class="br"> Original Latin http://www.corpusthomisticum.org/sth3183.html: Sicut enim maius est illuminare quam lucere solum, ita maius est contemplata aliis tradere quam solum contemplari. <br class="br">Summa Theologica (1265–1274) <br class="br">Variant: Better to illuminate than merely to shine; to deliver to others contemplated truths than merely to contemplate.

“But if man's affection be one of passion, then it is moved also in regard to other animals: for since the passion of pity is caused by the afflictions of others; and since it happens that even irrational animals are sensible to pain, it is possible for the affection of pity to arise in a man with regard to the sufferings of animals. Now it is evident that if a man practice a pitiful affection for animals, he is all the more disposed to take pity on his fellow-men: wherefore it is written (Prov. 12:10): "The just regardeth the lives of his beasts: but the bowels of the wicked are cruel." Consequently the Lord, in order to inculcate pity to the Jewish people, who were prone to cruelty, wished them to practice pity even with regard to dumb animals, and forbade them to do certain things savoring of cruelty to animals. Hence He prohibited them to "boil a kid in the milk of its dam"; and to "muzzle the ox that treadeth out the corn"; and to slay "the dam with her young."”

Thomas Aquinas book Summa Theologica

I-II, q. 102, art. 6 ad. 8
Summa Theologica (1265–1274)

“To be united to God in unity of person was not fitting to human flesh, according to its natural endowments, since it was above his dignity; nevertheless, it was fitting that God, by reason of his infinite goodness, should unite it to himself for human salvation.”

Thomas Aquinas book Summa Theologica

Source: Summa Theologica (1265–1274), III, q. 1, art. 2, ad 2

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

Thomas Aquinas book Summa Theologica

III, q.73, 3
Summa Theologica (1265–1274)

“I answer that, It was necessary for woman to be made, as the Scripture says, as a "helper" to man; not, indeed, as a helpmate in other works, as some say, since man can be more efficiently helped by another man in other works; but as a helper in the work of generation. This can be made clear if we observe the mode of generation carried out in various living things. Some living things do not possess in themselves the power of generation, but are generated by some other specific agent, such as some plants and animals by the influence of the heavenly bodies, from some fitting matter and not from seed: others possess the active and passive generative power together; as we see in plants which are generated from seed; for the noblest vital function in plants is generation. Wherefore we observe that in these the active power of generation invariably accompanies the passive power. Among perfect animals the active power of generation belongs to the male sex, and the passive power to the female. And as among animals there is a vital operation nobler than generation, to which their life is principally directed; therefore the male sex is not found in continual union with the female in perfect animals, but only at the time of coition; so that we may consider that by this means the male and female are one, as in plants they are always united; although in some cases one of them preponderates, and in some the other. But man is yet further ordered to a still nobler vital action, and that is intellectual operation. Therefore there was greater reason for the distinction of these two forces in man; so that the female should be produced separately from the male; although they are carnally united for generation. Therefore directly after the formation of woman, it was said: "And they shall be two in one flesh"”

Thomas Aquinas book Summa Theologica

Gn. 2:24
I, q. 92, art. 1 (Whether the Woman should have been made in the first production of things?)
Summa Theologica (1265–1274)

“Yet if heretics be altogether uprooted by death, this is not contrary to Our Lord's command [in Matthew 13:30], which is to be understood as referring to the case when the cockle [weeds] cannot be plucked up without plucking up the wheat, as we explained above (10, 8, ad 1), when treating of unbelievers in general.”

Thomas Aquinas book Summa Theologica

II–II, q. 11, art. 3, ad. 3
Summa Theologica (1265–1274)

“Reason may be employed in two ways to establish a point: firstly, for the purpose of furnishing sufficient proof of some principle, as in natural science, where sufficient proof can be brought to show that the movement of the heavens is always of uniform velocity. Reason is employed in another way, not as furnishing a sufficient proof of a principle, but as confirming an already established principle, by showing the congruity of its results, as in astrology the theory of eccentrics and epicycles is considered as established, because thereby the sensible appearances of the heavenly movements can be explained; not, however, as if this proof were sufficient, forasmuch as some other theory might explain them.”

Thomas Aquinas book Summa Theologica

I, q. 32, art. 1, reply obj. 2
Summa Theologica (1265–1274)

“As regards the individual nature, woman is defective and misbegotten, for the active power of the male seed tends to the production of a perfect likeness in the masculine sex; while the production of a woman comes from defect in the active force or from some material indisposition, or even from some external influence…On the other hand, as regards human nature in general, woman is not misbegotten, but is included in nature's intention as directed to the work of generation. Now the general intention of nature depends on God, Who is the universal Author of nature. Therefore, in producing nature, God formed not only the male but also the female.”

Thomas Aquinas book Summa Theologica

I, q. 92, art. 1, ad 1
Summa Theologica (1265–1274)

“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.”

Thomas Aquinas book Summa Theologica

II–II, q. 25, art. 5
Summa Theologica (1265–1274)

“It is written (1 John 4:16): "He that abideth in charity abideth in God, and God in him." Now charity is the love of God. Therefore, for the same reason, every love makes the beloved to be in the lover, and vice versa… the beloved is said to be in the lover, inasmuch as the beloved abides in the apprehension of the lover, according to Philippians 1:7, "For that I have you in my heart": while the lover is said to be in the beloved, according to apprehension, inasmuch as the lover is not satisfied with a superficial apprehension of the beloved, but strives to gain an intimate knowledge of everything pertaining to the beloved, so as to penetrate into his very soul.”

Thomas Aquinas book Summa Theologica

Source: Summa Theologica (1265–1274) I-II, q. 28, art. 2

“The third principle [way doing good to another may give pleasure] is the motive: for instance when a man is moved by one whom he loves, to do good to someone: for whatever we do or suffer for a friend is pleasant, because love is the principal cause of pleasure.”

Thomas Aquinas book Summa Theologica

I-II, q. 32, art. 6
Summa Theologica (1265–1274)

“Beauty adds to goodness a relation to the cognitive faculty: so that "good" means that which simply pleases the appetite; while the "beautiful" is something pleasant to apprehend.”

Thomas Aquinas book Summa Theologica

I–II, q. 27, art. 1, 3
Summa Theologica (1265–1274)

“Man cannot live without joy. That is why one deprived of spiritual joys goes over to carnal pleasures.”

Thomas Aquinas book Summa Theologica

II–II, q. 35, art. 4, ad. 2
Summa Theologica (1265–1274)

“If forgers and malefactors are put to death by the secular power, there is much more reason for excommunicating and even putting to death one convicted of heresy.”

Thomas Aquinas book Summa Theologica

Summa Theologica (1265–1274), Unplaced by chapter

“To scorn the dictate of reason is to scorn the commandment of God.”

Thomas Aquinas book Summa Theologica

Source: Summa Theologica (1265–1274) I-II, q. 19, art. 5

“All admit that indulgences have some value; for it would be blasphemy to say that the Church does anything in vain.”

Thomas Aquinas book Summa Theologica

Summa Theologica (1265–1274), Unplaced by chapter

“Law: an ordinance of reason for the common good, made by him who has care of the community.”

Thomas Aquinas book Summa Theologica

Summa Theologica (1265–1274), Unplaced by chapter

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