Because of the diverse conditions of humans, it happens that some acts are virtuous to some people, as appropriate and suitable to them, while the same acts are immoral for others, as inappropriate to them.

The soul is like an uninhabited world
that comes to life only when
God lays His head
against us.

The study of truth requires a considerable effort -- which is why few are willing to undertake it out of love of knowledge -- despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.

Every truth without exception- and whoever may utter it- is from the Holy Spirit.

The Study of philosophy is not that we may know what men have thought, but what the truth of things is.

Moral science is better occupied when treating of friendship than of justice.

There being an imminent danger for the faith, prelates must be questioned, even publicly, by their subjects.

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.

Perfection of moral virtue does not wholly take away the passions, but regulates them.

Art is the imitation of nature in her manner of operation: Art is the principle of manufacture.

It is altogether unlawful to kill oneself... Wherefore suicide is contrary to the inclination of nature, and to charity whereby every man should love himself... Life is God's gift to man, and is subject to His power, Who kills and makes to live. Hence whoever takes his own life, sins against God... for it belongs to God alone to pronounce sentence of death and life.

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.

Love works in a circle, for the beloved moves the lover by stamping a likeness, and the lover then goes out to hold the beloved inreality. Who first was the beginning now becomes the end of motion.

The last end of every maker, as such, is himself, for what we make we use for our own sake; and if at any time a man make a thing for the sake of something else, it is referred to his own good, whether his use, his pleasure, or his virtue.

We must love them both, those whose opinions we share and those whose opinions we reject, for both have labored in the search for truth, and both have helped us in finding it.

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.

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

If anyone without the right faith receives Baptism outside the Church, he does not receive it unto salvation ... From the comparison of the Church to Paradise, we learn that men can receive her Baptism even outside her fold, but that out there no one can receive or keep the salvation of the blessed.

Sin is a spiritual illness; thus sinners are in need of salvation.

Practical sciences proceed by building up; theoretical science by resolving into components.