Saint Jerome

I interpret as I should, following the command of Christ: “Search the Scriptures,” and “Seek and you shall find.” For if, as Paul says, Christ is the power of God and the wisdom of God, and if the man who does not know Scripture does not know the power and wisdom of God, then ignorance of Scriptures is ignorance of Christ. No one should think that I mean to explain the entire subject matter of this great book of the prophet Isaiah in one brief sermon, since it contains all the mysteries of the lord. It prophesies that Emmanuel is to be born of a virgin and accomplish marvelous works and signs. It predicts his death, burial and resurrection from the dead as the Savior of all men. Whatever is proper to holy Scripture, whatever can be expressed in human language and understood by the human mind, is contained in the book of Isaiah. 

-- Saint Jerome from a commentary on Isaiah

Pope Saint Gregory the Great

You should be aware that the word “angel” denotes a function rather than a nature. Those holy spirits of heaven have indeed always been spirits. They can only be called angels when they deliver some message. Moreover, those who deliver messages of lesser importance are called angels; and those who proclaim messages of supreme importance are called archangels.

-- Pope Saint Gregory the Great from a homily

Saint Laurence Ruiz

That I will never do, because I am a Christian, and I shall die for God, and for him I will give many thousands of lives if I had them. And so, do with me as you please.

-- Saint Laurence Ruiz after being asked to renounce his faith

Saint Vincent de Paul

Extend your mercy towards others, so that there can be no one in need whom you meet without helping. For what hope is there for us if God should withdraw His Mercy from us?

-- Saint Vincent de Paul

Saint Marie Victoire Therese Couderc

I abandon myself with my whole heart to God's will, and to God's good pleasure — and when I have in all sincerity made this act of self-surrender, I experience great tranquility and perfect peace. 

-- Saint Marie Victoire Therese Couderc

Saint Cyril of Jerusalem

Only a pure soul can boldly say: "Thy kingdom come." One who has heard Paul say, "Let not sin therefore reign in your mortal bodies," and has purified himself in action thought, and word will say to God: "Thy kingdom come!" 

-- Saint Cyril of Jerusalem

Saint Basil the Great

By the command of your only-begotten Son we communicate with the memory of your saints...by whose prayers and supplications have mercy upon us all, and deliver us for the sake of your holy name. 

-- Saint Basil the Great