O eternal Trinity!

O eternal Trinity! O Godhead! which Godhead gave value to the blood of your Son, you, O eternal Trinity, are a deep sea, into which the deeper I enter the more I find, and the more I find the more I seek; the soul cannot be satiated in your abyss, for she continually hungers after you, the eternal Trinity, longing to see you with light in your light.  Just as the deer longs for the fountain of living water, so does my soul long to leave the prison of this darksome body and see you in truth.  O how long will you hide your face from my eyes?...  You, eternal Trinity, are the Creator; and I your handiwork have come to know that you are in love with the beauty of what you have made, since you made me a new creation in the blood of your Son.  O Abyss!  O eternal Godhead!  O Sea profound!  What more could you have given me than the gift of your very self?

– from the ‘Treatise on Discretion’ (The Dialogue of Divine Providence, 1377–78) by Catherine of Sienna