St. Leo the Great, Pope and Doctor of the Church

A fresco image of Pope St. Leo the Great. He is writing a letter.

St. Leo the Great, Pope and Doctor of the Church

Feast Day: September 16

Patron Saint of…

Mass Readings


Read More about Leo the Great

Did You Know?

St. Leo the Great was a fifth century pope. He was dedicated to the service of the church. During his papacy, he worked for Church unity. He also refuted several heresies. These included the Pelagian error, which was a thinking that humans could perfect themselves without God’s grace, and Manichaeism, which denied the goodness of creation and the physical world. He wrote many sermons on the nature of Christ and affirmed that Jesus Christ was both human and divine, two natures in one person.

Patron Saint of …

Pope St. Leo the Great is the patron saint of popes and confessors.

Daily Mass Readings for the Memorial of Saint Cornelius and Cyprian

Readings for the Memorial may also be taken from may also be taken from the Common of Pastors (for a pope), or the Common of Doctors.

  • First ReadingSirach 39:6-11: “If it pleases the Lord Almighty, he who studies the law of the Most High will be filled with the spirit of understanding;”
  • Responsorial PsalmPsalm 146: “Blessed is he whose help is the God of Jacob.”
  • Gospel Luke 17:20-25: “The coming of the Kingdom of God cannot be observed, and no one will announce, ‘Look, here it is,’ or, ‘There it is.’”

Quotes from St. Leo the Great

Our sharing in the Body and Blood of Christ has no other purpose than to transform us into that which we receive.

The faith of those who live their faith is a serene faith. What you long for will be given you; what you love will be yours for ever.

Peace is the first thing the angels sang. Peace is the mark of the children of God. Peace is the nurse of love. Peace is the mother of unity. Peace is the rest of the blessed souls. Peace is the dwelling place of eternity.

Read More about Leo the Great

Learn more about his important contributions to early Christian theology.

Did You Know?

St. Leo is one of three popes named “the Great”. The other two are St. Gregory the Great and St. Nicholas the Great.






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