Whatever man desires, he desires it under the aspect of good

God is existence itself, of itself subsistent. Consequently, He must contain within Himself the whole perfection of being.

He who has a will is said to be good, so far as he has a good will; because it is by our will that we employ whatever powers we may have. Hence a man is said to be good, not by his good understanding; but by his good will.

No being can be spoken of as evil, formally as being, but only so far as it lacks being. Thus a man is said to be evil, because he lacks some virtue; and an eye is said to be evil, because it lacks the power to see well.

Since therefore God is self-subsisting being itself, nothing of the perfection of being can be wanting of Him. Now all created perfections are included in the perfection of being; for things are perfection, precisely so far as they have being after some fashion. It follows therefore that the perfection of no one things is wanting to God.

Hence the essence of goodness, so far as it consists in perfection, consists also in mode, species and order.

Charity inclines one to the act of martyrdom, as its first and chief motive cause, being the virtue commanding it

Since God is the very essence of goodness, the more something is foreign to God, the more it has the nature of evil

God is not related to creatures as though belonging to a different "genus," but as transcending every "genus," and as the principle of all "genera."

Two things are required for an act's perfection: first, the act must be right; second, the underlying disposition must be incapable of being the source of a contrary act. For that which is the source of good and bad acts cannot, of itself, be the perfect source of a good act

Rightness and full goodness in all the other virtues comes from prudence

Our manner of knowing is so weak that no philosopher could perfectly investigate the nature of even one little fly.

Likeness of creatures is not affirmed on account of agreement in form according to the formality of the same genus or species, but solely according to analogy, inasmuch as God is essential being, whereas other things are beings by participation.

The greatness of the human being consists in this: that it is capable of the universe.

The essence of goodness consists in this, that it is in some way desirable.

It is clear that people who give themselves to the contemplation of truth are the happiest a person in this life can be

For a thing is perfect in proportion to its state of actuality, because we call that perfect which lacks nothing of the mode of its perfection.

For the evil of moral wrong, which is in the act of the will, is directly contrary to the act of charity, which is the primary and chief perfection of the will

It is clear that goodness and being are the same really. But goodness presents the aspect of desirableness, which being does not present.

The chief act of fortitude is endurance

No person does any evil except intending something that seems good to the person

The law of nature is nothing other than the light of intellect, placed within us by God, through which we grasp what is to be done and what is to avoided

Final and complete happiness can consist in nothing other than the vision of the divine essence