Saint Cyprian of Carthage

Let us remember one another in concord and unanimity. Let us on both sides of death always pray for one another. Let us relieve burdens and afflictions by mutual love, that if one of us, by the swiftness of divine condescension, shall go hence the first, our love may continue in the presence of the Lord, and our prayers for our brethren and sisters not cease in the presence of the Father's mercy. 

-- Saint Cyprian of Carthage

Saint John Vianney

Yes, my dear bretheren, we shall see at the Judgement that the largest section of Christians practiced a religion of whim or caprice only---that is to say, the greatest number of them practiced their religion merely from motives of routine, and very few sought God alone in what they did.

-- Saint John Vianney

Pope Saint Leo the Great

For all, regenerated in Christ, as made kings by the sign of the cross. They are consecrated priests by the oil of the Holy Spirit, so that beyond the special service of our ministry as priests, all spiritual and mature Christians know that they are a royal race and are sharers in the office of the priesthood.

 -- Pope Saint Leo the Great