Saint Hipparchus of Samosata

Him we adore who hung upon the cross. Him we confess to be God, and the Son of God begotten, not made, co-essential with the Father, by whose deity we believe this whole world is created, preserved, and governed. 

-- Saint Hipparchus of Samosata

The Blessed Virgin Mary

Behold, I am the handmaid of the Lord; let it be to me according to your word.

-- The Blessed Virgin Mary from Luke 1: 38

Saint Ambrose of Milan

Our own evil inclinations are far more dangerous than any external enemies. 

-- Saint Ambrose of Milan

Saint Augustine of Hippo

No one of you should say, "Blessed are they who have deserved to receive Christ into their homes!" Do not grieve or complain that you were born in a time when you can no longer see God in the flesh. He did not in fact take this privilege from you. As he says, "Whatever you have done to the least of my brothers, you did to me." 

-- Saint Augustine of Hippo