Thomas Aquinas Quotes - Page 12

Those who are more adapted to the active life can prepare themselves for contemplation in the practice of the active life, while those who are more adapted to the contemplative life can take upon themselves the works of the active life so as to become yet.

Justice is a certain rectitude of mind whereby a man does what he ought to do in the circumstances confronting him.

[It is appropriate that the Body and Blood of Christ be truly present in this Sacrament] because of the perfection of the New Covenant. The sacrifices of the Old Covenant contained the true sacrifice of Christ's Passion only in symbol....Therefore it was necessary that the sacrifice of the New Covenant, instituted by Christ, have something more, namely, that it contain Christ Himself who has suffered and contain Him not only in symbol but in reality.

God should not be called an individual substance, since the principle of individuation is matter.

The celestial bodies are the cause of all that takes place in the sublunar world.

The only-begotten Son of God, wanting to make us sharers in His divinity, assumed our nature, so that He, made man, might make men gods.

It is possible to demonstrate God's existence, although not a priori, yet a posteriori from some work of His more surely known to us.

Now it seems that everything in the world stems from sources other than God, since the products of nature have their source in nature; deliberate effects can be traced back to human reason or will as their source. There is no need then to assume that God exists.

Whatever is in motion must be put in motion by another. If that by which it is put in motion be itself put in motion, then this also must needs be put in motion by another, and that by another again. But this cannot go on to infinity, because then there would be no first mover, and, consequently, no other mover; seeing that subsequent movers move only inasmuch as they are put in motion by the first mover; as the staff moves only because it is put in motion by the hand. Therefore it is necessary to arrive at a first mover, put in motion by no other; and this everyone understands to be God.

It must be understood that prime matter, and form as well, is neither generated nor corrupted, because every generation is from something to something. Now that from which generation proceeds is matter, and that to which it proceeds is form. So that, if matter or form were generated, there would be a matter for matter and a form for form, endlessly. Whence, there is generation only of the composite, properly speaking.

Affirmative precepts are distinguished from negative whenever one is not comprised in the other; thus, that of honoring parents does not comprise that of not killing, and vice versa.

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.

Right faith is of necessity required for Baptism, since it is said: "the justice of God is by faith in Jesus Christ" (Romans 3:22) ... Therefore, Baptism without faith avails nothing and thus we must recall that without faith no one is acceptable to God.

O how unspeakable is this Sacrament which sets our affections ablaze with charity. ... It is the fulfillment of Christ's Mystical Body.

Not everyone who is enlightened by an angel knows that he is enlightened by him.

For although the will cannot be inwardly moved by any creature, yet it can be moved inwardly by God.

To disparage the dictate of reason is equivalent to contemning the command of God.

Behold our refutation of the error. It is not based on documents of faith, but on the reasons and statements of the philosophers themselves. If then anyone there be who, boastfully taking pride in his supposed wisdom, wishes to challenge what we have written, let him not do it in some corner nor before children who are powerless to decide on such difficult matters. Let him reply openly if he dare. He shall find me there confronting him, and not only my negligible self, but many another whose study is truth.

Because the divine goodness could not be adequately represented by one creature alone, God produced many and diverse creatures, that what was wanting in one in the representation of the divine goodness might be supplied by another. For goodness, which in God is simple and uniform, in creatures is manifold and divided. Thus the whole universe together participates in the divine goodness more perfectly and represents it better than any single creature.

There is, therefore, a more perfect intellectual life in the angels. In them the intellect does not proceed to self-knowledge from anything exterior, but knows itself through itself.

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

Given the sin of impiety through which they [the Romans] sinned against the divine nature [by idolatry], the punishment that led them to sin against their own nature followed.... I say, therefore, that since they changed into lies [by idolatry] the truth about God, He brought them to ignominious passions, that is, to sins against nature; not that God led them to evil, but only that he abandoned them to evil.

The custom of the Church has very great authority and ought to be jealously observed in all things.

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 Angel's bread is made the Bread of man today.